Fill Container is one of the most important resizing properties in Figma Auto Layout. It allows a child layer to stretch and occupy the available space inside its parent Auto Layout frame while respecting the parent's padding, gap, and other layout settings.
In simple words, Fill Container means the child layer fills the available space provided by its parent. It is especially useful for responsive buttons, input fields, cards, images, text blocks, navigation elements, forms, dashboards, and reusable components.
Fill Container works with Auto Layout and is applied to child objects inside an Auto Layout frame. It is not available for top-level frames because those objects do not have a parent container whose available space they can fill.
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Fill Container is an Auto Layout resizing behavior that makes a child layer occupy the available width or height of its parent container.
In simple terms:
Parent Container
↓
Available Space
↓
Child Layer
↓
Fill Container
↓
Child stretches to available space
For example, if an input field is placed inside a card and its width is set to Fill Container, the input field can automatically expand or shrink when the card width changes.
Fill Container: A Figma Auto Layout resizing property that makes a child object stretch to occupy the available space inside its parent Auto Layout frame while respecting the parent's spacing and padding.
Fill Container
=
Use the available parent space
Modern UI designs need to work across different screen sizes. Manually resizing every child layer is inefficient and can create inconsistent layouts.
Fill Container helps designers create responsive layouts because child objects can automatically respond when their parent container changes size.
Fill Container is directly related to Figma Auto Layout. Auto Layout controls how elements are arranged, spaced, aligned, and resized inside a parent frame.
Auto Layout
|
+-- Flow
|
+-- Padding
|
+-- Gap
|
+-- Alignment
|
+-- Resizing
|
+-- Hug Contents
+-- Fill Container
+-- Fixed
Auto Layout can be added by selecting layers and pressing Shift + A.
Suppose a parent frame has a width of 500px and contains a child layer. If the parent has 20px padding on both sides, the child does not have access to the entire 500px.
Parent Width = 500px
Left Padding = 20px
Right Padding = 20px
Available Child Width
= 500 - 20 - 20
= 460px
Child Width = Fill Container
→ Child can occupy 460px
If the parent becomes 600px wide, the available space also increases.
Parent Width = 600px
Left Padding = 20px
Right Padding = 20px
Available Child Width
= 600 - 20 - 20
= 560px
Child Width = Fill Container
→ Child can occupy 560px
The child responds to the size of the parent automatically.
Fill Container and Hug Contents work in opposite directions.
Hug Contents:
Child Content
↓
Parent Size
Fill Container:
Parent Size
↓
Available Space
↓
Child Size
| Hug Contents | Fill Container |
|---|---|
| Frame adapts to content | Child adapts to parent space |
| Content determines size | Parent determines available size |
| Useful for compact components | Useful for responsive children |
| Common for buttons and badges | Common for inputs and full-width elements |
Fixed keeps a dimension at a specified value, while Fill Container allows the child to resize according to the available space in its parent.
Fixed:
Parent changes
↓
Child remains same size
Fill Container:
Parent changes
↓
Available space changes
↓
Child changes size
| Property | Behavior | Example |
|---|---|---|
| Fixed | Maintains specified size | Icon 24px |
| Hug Contents | Fits content | Badge |
| Fill Container | Uses available parent space | Input field |
Fill Container can be applied to child objects inside Auto Layout frames.
Auto Layout Parent
│
├── Child A → Fixed
├── Child B → Hug Contents
├── Child C → Fill Container
└── Child D → Fixed
Fill Container is not a top-level resizing behavior because a top-level frame does not have a parent Auto Layout container whose available space it can fill.
Width Fill Container is one of the most common uses of this property.
Parent
+--------------------------------------+
| |
| +------------------------------+ |
| | Child Layer | |
| | Fill Container | |
| +------------------------------+ |
| |
+--------------------------------------+
If the parent width changes, the child width can change automatically.
Parent = 400px
Child = Fill
Parent = 600px
Child = Fill
Parent = 800px
Child = Fill
The child continuously uses the available space according to the parent layout.
Fill Container can also be used for height.
Parent Height = 500px
Child:
Height = Fill Container
Result:
Child stretches to the available
vertical space of its parent.
This is useful for layouts where an element needs to occupy the remaining vertical space.
A child can use Fill Container on both axes when the design requires it.
Width = Fill Container
Height = Fill Container
This allows the child to respond to available horizontal and vertical space.
Parent
+-----------------------------+
| |
| +-----------------+ |
| | | |
| | Child | |
| | Fill Both | |
| | | |
| +-----------------+ |
| |
+-----------------------------+
Fill Container respects the available space inside the parent. Parent padding reduces the space available to the child.
Parent Width = 500px
Padding Left = 24px
Padding Right = 24px
Available Space
= 500 - 24 - 24
= 452px
Child Width = Fill Container
→ 452px
This is important when designing cards, forms, buttons, and responsive sections.
Gap between sibling objects also affects how much space is available to a Fill Container child.
Parent Width = 600px
Left Padding = 20px
Right Padding = 20px
Child A = 100px
Gap = 16px
Child B = Fill Container
Available:
600 - 20 - 20 - 100 - 16
Child B
= 444px
The Fill Container child uses the remaining available space after accounting for other layers, padding, and gaps.
Multiple children can have different resizing behaviors inside the same Auto Layout frame.
Toolbar
│
├── Icon → Fixed
├── Search → Fill Container
└── Button → Hug Contents
This is an extremely useful responsive layout pattern.
+------------------------------------------------+
| [Icon] | Search Input | [Search] |
+------------------------------------------------+
The search input can consume the remaining available space while the icon and button maintain their own sizes.
Input fields are one of the best examples of Fill Container.
Form
│
├── Label
├── Input
└── Helper Text
Input:
Width = Fill Container
If the form becomes wider, the input can expand. If the form becomes narrower, the input can shrink.
Desktop:
+--------------------------------------+
| Email |
| [ [email protected] ] |
+--------------------------------------+
Mobile:
+--------------------------+
| Email |
| [ [email protected] ] |
+--------------------------+
Fill Container is useful when a button needs to occupy the full available width of its parent.
Button
Width = Fill Container
Height = Hug Contents
This is commonly used for mobile applications and forms.
+------------------------------+
| |
| Continue |
| |
+------------------------------+
If the parent width changes, the button can automatically resize.
| Button Type | Width | Use Case |
|---|---|---|
| Compact Button | Hug Contents | Toolbar, navigation, desktop actions |
| Full Width Button | Fill Container | Mobile forms, checkout, login |
| Fixed Button | Fixed | Specific controlled layout |
Cards frequently use Fill Container to occupy the width available from their parent.
Section
│
└── Card
Width = Fill Container
Height = Hug Contents
This allows the card to grow horizontally while its height can remain content-driven.
Desktop:
+------------------------------------------+
| Product Card |
+------------------------------------------+
Tablet:
+------------------------------+
| Product Card |
+------------------------------+
Mobile:
+---------------------+
| Product Card |
+---------------------+
Text layers can also use Fill Container when they need to occupy the available width of their parent.
Card
│
├── Heading
├── Description
└── Button
Description:
Width = Fill Container
Height = Hug Contents
This allows the text block to become narrower or wider with the card while its height adjusts to the amount of text.
Fill Container is especially useful when text needs to wrap according to the available width.
Parent Width = 400px
Text:
Width = Fill Container
Available Width
↓
Text wraps
↓
Height increases
When the parent becomes narrower, the text can wrap into additional lines. When the parent becomes wider, fewer lines may be required.
Images can use Fill Container when they should stretch according to their parent.
Card
│
└── Image
Width = Fill Container
Height = Fixed / Fill
Aspect Ratio = Maintained
Combining Fill Container with an aspect ratio can help create responsive image layouts.
When an image needs to grow horizontally while maintaining its proportions, Fill Container can be combined with aspect-ratio behavior.
Image
Width = Fill Container
Aspect Ratio = Maintain
Parent Width Changes
↓
Image Width Changes
↓
Image Height Adjusts
↓
Proportion Maintained
This is useful for thumbnails, banners, product images, profile images, and responsive media cards.
Fill Container can be used in navigation structures where one element should consume the available space.
Navigation
│
├── Logo → Fixed
├── Menu → Fill Container
└── Profile → Fixed
The middle navigation area can occupy the remaining available space while the logo and profile controls maintain their sizes.
A search bar is another common use case.
Header
│
├── Logo
├── Search Bar
└── Profile
Search Bar
Width = Fill Container
+------------------------------------------------+
| Logo | Search anything... | User |
+------------------------------------------------+
The search bar expands or contracts according to the available space.
Forms often contain several elements that need to share the available width.
Form
│
├── Name Input
├── Email Input
├── Password Input
└── Submit Button
Inputs:
Width = Fill Container
Submit:
Width = Fill Container
This creates a flexible form that can adapt to different screen sizes.
Login Form
│
├── Logo
├── Heading
├── Email Input → Fill
├── Password Input → Fill
├── Forgot Password
└── Login Button → Fill
The input fields and button can use Fill Container while the surrounding content uses Hug Contents.
Fill Container becomes especially powerful when Auto Layout frames are nested.
Page
│
└── Card
│
└── Content
│
├── Heading
├── Description
└── Button
Example resizing setup:
Page
Width = Fixed
Card
Width = Fill Container
Height = Hug
Content
Width = Fill Container
Height = Hug
Heading
Width = Fill Container
Description
Width = Fill Container
Height = Hug
Button
Width = Fill Container
Height = Hug
This creates a responsive component where different layers respond to their parent containers.
Nested Auto Layout frames can both participate in responsive resizing.
Parent
Width = Fill
↓
Child Frame
Width = Fill
↓
Child Content
Width = Fill
This creates a chain of responsive sizing where available space flows from the outer container toward the inner layers.
A common professional design uses Fill Container and Hug Contents together rather than choosing only one.
Card
Width = Fill Container
Height = Hug Contents
Content
Width = Fill Container
Height = Hug Contents
Button
Width = Fill Container
Height = Hug Contents
The parent fills horizontal space, while its height follows the content.
Fixed-sized elements can exist alongside Fill Container elements.
Toolbar
│
├── Icon
│ Width = Fixed 24px
│
├── Search
│ Width = Fill Container
│
└── Button
Width = Fixed 100px
The Fill Container object uses the remaining space after the fixed objects and spacing are accounted for.
A simplified way to understand Fill Container is to think about the available space remaining after fixed dimensions, padding, and gaps.
Available Space
=
Parent Size
-
Padding
-
Fixed Children
-
Gaps
-
Other Required Spacing
The Fill Container child can then occupy the remaining available space according to the Auto Layout configuration.
Toolbar
│
├── Menu Icon → Fixed 24px
├── Search → Fill Container
└── Profile → Fixed 40px
Padding = 16px
Gap = 12px
When the toolbar becomes wider, the search field gets more space. When it becomes narrower, the search field reduces accordingly.
Header
│
├── Logo → Fixed
├── Navigation → Fill Container
└── Actions → Hug
This is a useful desktop header structure.
+---------------------------------------------------+
| Logo | Navigation | Actions |
+---------------------------------------------------+
Product Card
│
├── Product Image → Fill
├── Product Name → Fill
├── Description → Fill
├── Price → Hug
└── Button → Fill
Card
Width = Fill Container
Height = Hug Contents
The card can adapt to its parent while the content inside responds to the available width.
Dashboard
│
├── Sidebar → Fixed
│
└── Main Content → Fill Container
│
├── Header → Fill
├── Statistics → Fill
└── Charts → Fill
The main content area can consume the remaining horizontal space after the sidebar.
Fill Container is particularly useful in mobile designs because many mobile components need to stretch across the screen width.
Mobile Screen
+--------------------------+
| |
| Heading |
| |
| [ Email Input ] |
| |
| [ Password Input ] |
| |
| [ Login ] |
| |
+--------------------------+
The input fields and button can use Fill Container to maintain consistent screen margins.
On desktop interfaces, Fill Container can be used for flexible content areas.
Desktop
+------------------------------------------------------+
| Sidebar | Main Content |
| Fixed | Fill Container |
| | |
+------------------------------------------------------+
The main content can expand when the browser or application window becomes wider.
Minimum dimensions can be used to prevent a Fill Container element from becoming too small.
Input
Width = Fill Container
Minimum Width = 200px
The input can use available space but should not become smaller than the defined minimum width.
A maximum width can be useful when a component should expand but should not become excessively wide.
Content
Width = Fill Container
Maximum Width = 800px
This is useful for article content, forms, descriptions, dashboards, and other layouts where readability matters.
| Setting | Behavior |
|---|---|
| Fill Container | Uses available parent space |
| Fill + Minimum | Uses available space but cannot become smaller than minimum |
| Fill + Maximum | Uses available space but cannot exceed maximum |
| Fill + Min + Max | Responsive within defined boundaries |
A responsive card commonly combines Fill Container for width and Hug Contents for height.
Card
Width = Fill Container
Height = Hug Contents
Inside:
Image → Fill
Title → Fill
Description → Fill
Button → Fill
This structure works well for product cards, blog cards, profile cards, and dashboard cards.
Text layers inside responsive Auto Layout structures should be configured carefully. A Fill Container text layer can respond to the width of its parent, while its height can grow when the text wraps.
Parent Width Changes
↓
Text Width Changes
↓
Text Wraps
↓
Text Height Changes
↓
Parent Height Updates
This pattern is useful for responsive descriptions and content sections.
Long text is an excellent way to test responsive behavior.
Short:
Welcome to our app.
Long:
Welcome to our application where
you can manage projects, tasks,
notifications, and account settings.
If the text layer uses Fill Container, its width can follow the parent while its height changes according to wrapping.
Large text areas can use Fill Container when they should occupy the available width.
Contact Form
│
├── Name
├── Email
├── Subject
└── Message Text Area
Message:
Width = Fill Container
This creates a flexible form structure suitable for desktop and mobile layouts.
Tables and dashboard content can also use Fill Container for columns or content areas that need to consume available space.
Dashboard
│
├── Fixed Column
├── Flexible Column → Fill
└── Action Column → Fixed
The flexible column can expand while the fixed columns retain their intended dimensions.
Navigation
│
├── Logo → Fixed
├── Menu Area → Fill Container
│ ├── Home
│ ├── Products
│ ├── Services
│ └── Contact
└── Profile → Fixed
The menu area can use the remaining horizontal space between the fixed elements.
Footer
│
├── Logo → Fixed
├── Links → Fill Container
└── Social Icons → Fixed
This allows the links section to adapt to different available widths.
Fill Container is extremely useful when designing reusable components. A component can be created so that its internal layers respond to the size of the component.
Reusable Card
↓
Main Component
↓
Instance
↓
Resize Component
↓
Child layers adapt automatically
This reduces manual adjustments when components are reused in different layouts.
| Component | Width | Height |
|---|---|---|
| Compact Button | Hug | Hug |
| Full Width Button | Fill | Hug |
| Input | Fill | Fixed/Hug |
| Card | Fill | Hug |
| Icon | Fixed | Fixed |
Different components can use different resizing behaviors depending on their intended role.
Design systems can use Fill Container as a standard behavior for components that need to adapt to their parent.
Design System
│
├── Buttons
│ ├── Compact → Hug
│ └── Full Width → Fill
│
├── Inputs
│ └── Fill
│
├── Cards
│ ├── Width → Fill
│ └── Height → Hug
│
└── Icons
└── Fixed
Fill Container is an important part of responsive UI design because it allows child objects to respond to changes in their parent container.
Parent Resizes
↓
Available Space Changes
↓
Fill Child Resizes
↓
Content Reflows
↓
Responsive Layout
In horizontal Auto Layout, Fill Container is commonly used for an element that should consume available horizontal space.
Horizontal Auto Layout
Icon
→ Search
→ Button
Icon = Fixed
Search = Fill Container
Button = Hug
The search field can expand and contract between the fixed icon and button.
In vertical Auto Layout, Fill Container can be used for child elements that need to occupy the available width or, in appropriate layouts, available height.
Vertical Auto Layout
Heading
↓
Input → Fill Container
↓
Password → Fill Container
↓
Button → Fill Container
This structure is common in forms and mobile screens.
In Grid Auto Layout, Fill Container can be used for child objects and grid tracks so that dimensions respond to the available cell or frame space.
Grid
+-----------+-----------+
| A | B |
| Fill | Fill |
+-----------+-----------+
| C | D |
| Fill | Fill |
+-----------+-----------+
Grid layouts can use Fill Container for responsive tracks and child objects.
When Auto Layout uses Wrap, child elements can move into additional rows or columns as available space becomes limited.
Wide Container:
[A] [B] [C] [D]
Narrow Container:
[A] [B]
[C] [D]
Fill Container can work with responsive layouts where the parent changes size and child content needs to adapt.
Alignment controls where children are positioned within their parent. Fill Container changes the child's dimension first, so alignment may have less visible effect on an axis where the child fills all available space.
Parent
+--------------------------+
| |
| Child → Fill Container |
| |
+--------------------------+
If the child occupies all available horizontal space, horizontal alignment may not produce an obvious visual difference.
Auto Gap can distribute available space between child objects. Fill Container and Auto Gap should therefore be planned together so that the layout behaves predictably.
Parent
│
├── Fixed Child
├── Fill Child
└── Fixed Child
Auto Gap
+
Fill Container
Result:
Flexible distribution of available space
Always test the layout at different parent widths when combining these properties.
Auto Layout uses resizing properties to control how child layers respond to their parent. Traditional constraints are generally not the primary mechanism for child objects participating in an Auto Layout flow.
Auto Layout Child
↓
Resizing Property
↓
Fill Container
↓
Responsive Behavior
For an Auto Layout frame nested inside a regular frame, constraints can still be used on the Auto Layout frame itself.
Fill Container requires a parent Auto Layout context. A top-level frame cannot use Fill Container because there is no parent Auto Layout container providing available space.
Top-Level Frame
↓
No Parent Auto Layout
↓
Fill Container unavailable
Instead, place the frame inside an appropriate Auto Layout parent when you need Fill Container behavior.
Not every component should fill its parent. Compact components often need to size themselves according to their content.
Compact Button
Width = Hug Contents
Full Width Button
Width = Fill Container
Choose the resizing property according to the intended design behavior.
If Fill Container is not available, first check whether the selected layer is actually a child of an Auto Layout frame.
Fill not available
↓
Check Parent
↓
Is Auto Layout enabled?
|
No
↓
Add Auto Layout
|
Yes
↓
Check Child Layer
A Fill Container child can appear smaller or larger than expected if the parent has padding, gaps, fixed siblings, or other resizing rules.
Unexpected Size
↓
Check Parent Width
↓
Check Padding
↓
Check Gap
↓
Check Fixed Siblings
↓
Check Fill Setting
Text layers have their own resizing behavior. A Fill Container text layer should be configured correctly so that text can respond to the available width.
Parent Width Changes
↓
Text Width Changes
↓
Text Wraps
↓
Text Height Changes
Fixed-size text boxes can prevent the intended responsive behavior and may cause unwanted overlap or truncation.
A Fill Container component can become too narrow if no minimum dimension is defined.
Fill Container
↓
Parent becomes narrow
↓
Child becomes too narrow
↓
Content becomes difficult to use
Use a minimum width when the component needs a lower size boundary.
Some content should not become excessively wide even when the parent has a large amount of space.
Fill Container
↓
Very Wide Parent
↓
Content becomes too wide
↓
Readability decreases
A maximum width can be used to create a more controlled responsive layout.
| Component | Recommended Use |
|---|---|
| Input Field | Width Fill Container |
| Full-Width Button | Width Fill Container |
| Search Bar | Width Fill Container |
| Card | Width Fill Container |
| Text Block | Width Fill Container |
| Image | Often Width Fill Container |
| Dashboard Main Area | Fill Container |
| Compact Badge | Usually Hug Contents |
| Icon | Usually Fixed |
Should the object occupy available parent space?
|
Yes
↓
Use Fill Container
Should the object fit its content?
|
Yes
↓
Use Hug Contents
Should the object keep an exact size?
|
Yes
↓
Use Fixed
Should the object be responsive but have boundaries?
|
Yes
↓
Use Fill + Min/Max
Create a responsive login form using Auto Layout.
Login Form
│
├── Logo
├── Heading
├── Email Input
├── Password Input
├── Forgot Password
└── Login Button
Email Input
Width = Fill Container
Password Input
Width = Fill Container
Login Button
Width = Fill Container
Height = Hug Contents
Resize the parent frame and verify that the input fields and button adapt automatically.
Header
│
├── Logo → Fixed
├── Search → Fill Container
└── Profile → Fixed
Padding = 16px
Gap = 12px
Resize the header and observe how the search field consumes the available space between the fixed elements.
Product Card
│
├── Image
├── Product Name
├── Description
├── Price
└── Buy Button
Card Width = Fill Container
Card Height = Hug Contents
Image = Fill
Product Name = Fill
Description = Fill
Price = Hug
Buy Button = Fill
Test the card at desktop, tablet, and mobile widths.
Dashboard
│
├── Sidebar → Fixed
│
└── Main Area → Fill Container
│
├── Header → Fill
├── Statistics → Fill
└── Chart Area → Fill
Resize the dashboard and verify that the main area expands or contracts while the sidebar maintains its intended width.
Navigation
│
├── Logo → Fixed
├── Navigation Links → Fill Container
└── User Actions → Hug
The navigation links area should consume the available space between the fixed logo and user actions.
Contact Form
│
├── Name → Fill
├── Email → Fill
├── Subject → Fill
├── Message → Fill
└── Send Button → Fill
Parent Width = Fill
Parent Height = Hug
Test the form using different parent widths and longer text values.
If Fill Container does not work as expected, check the following:
Fill not working
↓
Is the layer inside Auto Layout?
|
No
↓
Add Auto Layout to parent
|
Yes
↓
Is Width/Height set to Fill?
|
No
↓
Set Fill Container
|
Yes
↓
Check Parent Padding
↓
Check Gap
↓
Check Fixed Siblings
↓
Check Min/Max
↓
Check Text Resizing
↓
Resize Parent
↓
Test Again
Fill Container communicates an important responsive design intention to developers: the child should consume available space rather than remain at an arbitrary fixed width.
Figma
Child Width = Fill Container
↓
Responsive Width
↓
Developer Implementation
↓
Element expands to available space
The exact implementation depends on the development technology, but the design intent remains the same: the element should respond to its container.
On the web, a Fill Container design intent may often correspond to a flexible width such as width: 100%, flex behavior, grid sizing, or another layout rule depending on the surrounding structure.
.input {
width: 100%;
}
For a flexible layout, developers may also use Flexbox:
.content {
flex: 1;
}
The exact CSS implementation should be based on the surrounding layout rather than treating Fill Container as a one-to-one CSS property.
Desktop
Parent = Wide
↓
Fill Child = Wide
Tablet
Parent = Medium
↓
Fill Child = Medium
Mobile
Parent = Narrow
↓
Fill Child = Narrow
This is one of the fundamental ideas behind responsive design: children respond to the space provided by their parent.
| Feature | Fill Container | Hug Contents | Fixed |
|---|---|---|---|
| Uses available parent space | Yes | No | No |
| Content controls size | No | Yes | No |
| Exact dimension maintained | No | No | Yes |
| Requires Auto Layout parent | Yes | Yes | No |
| Useful for full-width inputs | Yes | No | Sometimes |
| Useful for compact buttons | Sometimes | Yes | Sometimes |
| Useful for responsive cards | Yes | Yes, depending on axis | Sometimes |
Fill Container is an Auto Layout resizing property that makes a child layer occupy the available space inside its parent.
Fill Container can be applied to child objects inside Auto Layout frames.
No. Fill Container requires an Auto Layout parent that provides available space.
Fill Container makes a child use available parent space, while Hug Contents makes an Auto Layout frame fit its content.
Fill Container responds to available parent space, while Fixed maintains a specified dimension.
Yes. Width and height can independently use Fill Container when the layout structure supports it.
It allows an input field to automatically expand or shrink according to the available width of its parent.
Yes. It is especially useful for full-width buttons, while compact buttons often use Hug Contents.
Yes. Fill Container uses the available space inside the parent's padding.
Yes. The space occupied by gaps and other child objects affects the available space remaining for a Fill Container child.
Yes. Minimum and maximum dimensions can provide boundaries for a responsive Fill Container object.
It allows child elements to automatically respond when the size of their parent container changes.
| Concept | Quick Meaning |
|---|---|
| Fill Container | Child uses available parent space |
| Hug Contents | Frame fits its content |
| Fixed | Dimension stays specified |
| Padding | Space between parent edge and child |
| Gap | Space between child layers |
| Min Width | Smallest allowed width |
| Max Width | Largest allowed width |
| Nested Auto Layout | Multiple responsive layout levels |
| Responsive Design | Layout adapts to available space |
Fill Container is a core Figma Auto Layout feature for creating flexible and responsive user interfaces. Instead of manually assigning a fixed width or height to every child element, Fill Container allows a child object to use the available space provided by its parent while respecting padding, gaps, and other layout rules.
It is particularly useful for input fields, full-width buttons, search bars, responsive cards, text areas, images, navigation areas, dashboards, and reusable components. When combined with Hug Contents, Fixed sizing, minimum and maximum dimensions, and nested Auto Layout, Fill Container helps designers create layouts that adapt naturally to different screen sizes.
The most important rule to remember is: Fill Container means the child adapts to the available space of its parent, Hug Contents means the frame adapts to its content, and Fixed means the dimension stays at a defined size.
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