What are the attributes of background images in css

The attributes of background images in css are: 1. background-image; 2. background-repeat; 3. background-position; 4. background-size; 5. background-attachment.

The operating environment of this tutorial: Windows 10 system, CSS3 version. This method is suitable for all brands of computers.

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Common image attributes are:

1. Background image insertion

background-image:url(位置及名称);  //默认在父级元素内的左上角

2. Background tiling method

background-repeat:no-repeat;   //不平铺

3. Background position

background-position:right bottom;  //横向在右边，纵向在下边，即右下角
center center;  //位于中心
center right;  //中间靠右
100px 200px;  //靠左100 靠上200

4. Background size

background-size:cover/contain/100% 100%  等比例缩放(铺满即可)/包含在里面/按盒子大小缩放

Note: Lower versions of IE do not support background size

5. Background display method

background-attachment:scroll//随屏幕滚动 fixed//固定在可视区域，注意:此时的位置是相对于可视区域的
(fixed:这里有一个兼容性性的问题，在IE6中，只有html和body支持这个属性)

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