# Size in Creght | Creght Visual Documentation

> Quick Start: Use Fixed for precise control over width/height. Use Percentage or Fill (fr) for responsive layouts.…

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# Size in Creght

**Quick Start:**

- Use **Fixed** for precise control over width/height.
- Use **Percentage** or **Fill (fr)** for responsive layouts.
- Use **Auto** for content-driven sizing (like text).
- Use **Viewport** for full/partial screen sections.
- Enable **Aspect Ratio** to maintain element proportions during resizing.

Select an element, then go to the **Size** panel in the right-hand settings sidebar to adjust its dimensions.

![image.png](https://fsb.huglight.cn/87837258ec653927a8b62181f29e9828/image.png)

Width can be set as: **Fixed, Percentage, Fill, or Auto**.

Height has the same options, with an additional type: **Viewport**.

## Size Types

### Fixed

A fixed size assigns an exact value to the element.

For example, setting the width to `120px` means the element will always remain `120px` wide across all devices.

![image.png](https://fsb.huglight.cn/bf14da4b0bd4c7bb2f632abe0f017715/image.png)

### Percentage

Percentage size is based on the parent container’s size.

For example, setting the width to `50%` makes the element half the width of its parent.

![image.png](https://fsb.huglight.cn/faacb0b65ecbd1abfaddad3356d6a5d2/image.png)

### Fill (1fr)

When the parent uses **Auto Layout**, setting a child element’s width to **Fill (1fr)** makes it take up the remaining available space.

In the example below, the right element is fixed at `360px`. The left blue block is set to `1fr`, filling the rest of the parent container.

!\[image.png\]

If multiple elements are set to **Fill (1fr)**, the remaining space is divided equally.![image.png](https://fsb.huglight.cn/47602a3ea85ff2440959e03220287ea0/image.png)

If one element is set to **2fr**, it will take up twice as much space as the others.

![image.png](https://fsb.huglight.cn/079dce59bba46d031a6444908c0be240/image.png)

### Auto

Auto size makes the element wrap its content.

For example, a text element will automatically adjust its width or height based on the text length.

![image.png](https://fsb.huglight.cn/7ef0724fe4ac1e9a68b04c8d1a641a14/image.png)

### Viewport

Viewport size is based on the visible area of the browser window.

- `100vh` = full viewport height
- `50vh` = half viewport height

![image.png](https://fsb.huglight.cn/50a44580ab11a78e752438060fb0fb6b/image.png)

### Aspect Ratio

Enabling the **lock icon** between width and height activates a fixed aspect ratio.

When enabled, the element’s proportions remain constant during resizing (e.g., when the browser width changes).

This is commonly used to display images without distortion.

⚠️ Note: Creght only supports height scaling according to width changes.

![image.png](https://fsb.huglight.cn/088f846950f04f52d24fe82f089ce0bd/image.png)

## Size Type Comparison

| Type | Definition | Common Use Case |
| --- | --- | --- |
| **Fixed** | Assigns an exact pixel value. The element size stays the same on all devices. | Buttons, icons, or elements requiring a precise size. |
| **Percentage** | Sets size as a percentage of the parent container. | Responsive layouts, making elements scale with their container. |
| **Fill (fr)** | Distributes remaining space within an auto layout. Multiple elements can share space proportionally (e.g., `1fr`, `2fr`). | Flexible grid layouts, equal or proportional columns. |
| **Auto** | Wraps the element around its content. | Text blocks or components that should adapt to content length. |
| **Viewport** | Uses the browser’s visible area ( `vh` for height). | Full-screen sections, hero banners, or elements that scale with the viewport. |
| **Aspect Ratio** | Maintains proportional width and height when resizing. | Images or videos that must keep their original proportions. |

On this page

- [Size Types](#size-types)
- [Fixed](#fixed)
- [Percentage](#percentage)
- [Fill (1fr)](#fill-1fr)
- [Auto](#auto)
- [Viewport](#viewport)
- [Aspect Ratio](#aspect-ratio)
- [Size Type Comparison](#size-type-comparison)

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