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CSS Image Property Guide: background-size and object-fit
In front-end development, using images is very common. In order to make images display better on web pages, CSS provides a variety of properties to adjust and control the size and layout of images. Among them, background-size
and object-fit
are two commonly used properties. They can adjust the size and adaptation of the image as needed. This article explains these two properties in detail and provides specific code examples.
1. background-size attribute
background-size
attribute is used to adjust the size of the background image. It can use the following values:
.background { background-image: url('img.jpg'); background-size: cover; }
.background { background-image: url('img.jpg'); background-size: contain; }
.background { background-image: url('img.jpg'); background-size: 200px 300px; }
.background { background-image: url('img.jpg'); background-size: 50% 75%; }
2. Object-fit attribute
object-fit
The attribute is used to adjust the size and adaption of the image in the a1f02c36ba31691bcfe87b2722de723b tag. It can use the following values:
img { object-fit: fill; }
img { object-fit: contain; }
img { object-fit: cover; }
img { object-fit: none; }
img { object-fit: scale-down; }
3. Sample code
In order to better understand and apply the background-size
and object-fit
properties, the following is Specific code example:
<!DOCTYPE html> <html> <head> <style> .background { width: 500px; height: 300px; background-image: url('image.jpg'); background-size: cover; } img { width: 200px; height: 150px; object-fit: cover; } </style> </head> <body> <div class="background"></div> <img src="image.jpg" alt="图片"> </body> </html>
In the above code, the .background
class uses the background-size: cover;
attribute to scale the background image proportionally and completely cover the container. The a1f02c36ba31691bcfe87b2722de723b
tag applies the object-fit: cover;
attribute to scale the image proportionally and completely cover the a1f02c36ba31691bcfe87b2722de723b element.
By adjusting the values of related properties, you can customize the size and adaption of the image so that it fits perfectly into your web page layout.
Summary:
By using the background-size
and object-fit
properties, we can easily adjust and control the size and fit of the image Way. Whether as a background image or as a picture in the a1f02c36ba31691bcfe87b2722de723b element, we can easily achieve customized image display effects. Hopefully this article will help you better understand and apply these two properties.
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