Methods include pixel value, percentage, em unit, rem unit, vw/vh unit, auto, fit-content, min-content, max-content. Detailed introduction: 1. Pixel value (px): The pixel value is fixed, and its width remains unchanged no matter how the screen resolution changes. For example: width: 300px; 2. Percent (%): The percentage width is relative to the width of the parent element. For example: width: 50%; 3, em unit, etc.
In CSS, the main methods of expressing width values are:
- Pixel value (px): The pixel value is fixed , its width remains unchanged no matter how the screen resolution changes. For example: width: 300px;
- Percent (%): The percentage width is relative to the width of the parent element. For example: width: 50%;
- em unit: This is a relative unit, usually relative to the font size of the current element. For example: width: 2em;
- rem unit: This unit is relative to the font size of the root element (html). For example: width: 2rem;
- vw/vh units: These units represent one hundredth of the viewport width/height respectively. For example: width: 50vw;
- auto: When set to auto, the browser will automatically determine the width of the element. For example: width: auto;
- fit-content: This value will automatically adjust the width of the element based on the content, but will not exceed the width of its parent element. For example: width: fit-content;
- min-content: This value will automatically adjust the width of the element based on the minimum size of the content. For example: width: min-content;
- max-content: This value will automatically adjust the width of the element based on the maximum size of the content. For example: width: max-content;
These units can be selected and used according to your needs, but please note that different units may have different effects in different scenarios.
The above is the detailed content of What are the methods for expressing width value in css?. For more information, please follow other related articles on the PHP Chinese website!
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