CSS measurement properties: height, width and max-height/max-width

CSS measurement properties: height, width and max-height/max-width, specific code examples are required

In web design and development, controlling the size of elements is very important. By using the CSS measurement properties, we can precisely define the height and width of an element, as well as the maximum limit of the element's size. This article will introduce the commonly used measurement properties in CSS: height, width, max-height and max-width, and provide specific code examples.

1. The height (height) attribute is used to define the height of the element. Can be specified using pixels (px), percentage (%), viewport units (vh), or other supported units.

Sample code:

.box {
  height: 200px; /* 使用像素设置高度 */
}

.container {
  height: 50%; /* 使用百分比设置高度 */
}

.header {
  height: 10vh; /* 使用视口单位设置高度 */
}

2. The width (width) attribute is used to define the width of the element. Similar to the height property, it can be specified using pixels, percentages, viewport units, or other supported units.

Sample code:

.box {
  width: 300px; /* 使用像素设置宽度 */
}

.container {
  width: 70%; /* 使用百分比设置宽度 */
}

.sidebar {
  width: 20vw; /* 使用视口单位设置宽度 */
}

3. The max-height (maximum height) attribute is used to limit the maximum height of an element. Scroll bars are automatically displayed when the element content exceeds the maximum height.

Sample code:

.box {
  max-height: 500px; /* 设置最大高度为500像素 */
}

.container {
  max-height: 80%; /* 设置最大高度为父元素高度的80% */
}

4. The max-width (maximum width) attribute is used to limit the maximum width of an element. Similar to the max-height attribute, scroll bars will be automatically displayed when the content exceeds the maximum width.

Sample code:

.box {
  max-width: 800px; /* 设置最大宽度为800像素 */
}

.container {
  max-width: 90%; /* 设置最大宽度为父元素宽度的90% */
}

The above code example demonstrates how to use the CSS measurement properties to control the height and width of an element, as well as the maximum height and maximum width. These properties are very useful, especially in responsive designs, to automatically resize elements based on different device sizes.

Summary:

• The height attribute is used to define the height of the element.
• The width attribute is used to define the width of the element.
• The max-height attribute is used to limit the maximum height of an element.
• The max-width attribute is used to limit the maximum width of an element.

By properly using these measurement properties, we can better control and layout the elements in the web page and achieve a better user experience. Hopefully the code examples in this article will help readers better understand and apply these properties.

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