Constraints

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What this means

• Which edges an element is attached to
• Whether it resizes or stays fixed
• How it responds when the screen grows or shrinks

• Figma
• Framer
• Lovable

1

Select an element inside a frame

Constraints only apply to elements that live inside a parent container.

2

Set horizontal and vertical constraints

In the right panel, choose rules such as:

• Left, Right, Center
• Top, Bottom, Center
• Scale for resizing behavior

3

Resize the frame to test behavior

Resize the parent frame and observe how the element responds, and adjust constraints until the behavior matches your intent.

Conceptually, this is the same mental model as Figma constraints,and it’s done in the position section of the right panel.

1

Select an element inside a frame

Constraints only apply to elements that live inside a parent container.

2

Set constraints

In the right panel, set rules such as: Left, Right, Center, Top, Bottom

3

Check out your element

while setting a constraint, Framer provides a quick simulation of how the element would be positioned when it’s parent frame is re-sized.

Lovable does not expose constraints as a visual toggle, but the concept still exists.

1

Describe resizing behavior in your prompt

Instead of naming “auto-layout,” describe how elements should behave:

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Example Prompt

Copy

Make the header stick to the top, keep action buttons aligned to the right, and allow the main content area to stretch on larger screens.

2

Review the generated layout rules

Lovable usually translates this into:

• Flex or grid alignment rules
• Relative positioning
• Responsive sizing logic

3

Refine behavior directly in the code

• Alignment properties
• Width and height behavior
• Breakpoint-specific rules

In Lovable, constraints live in layout logic, not a visual panel.

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Why this matters

• Adapt to different screen sizes
• Handle dynamic content
• Be handed off for implementation