In CSS, you can use the background-repeat attribute to clear background image duplication. You only need to set the value of this attribute to "no-repeat" to specify that the background image does not repeat, that is, the background image will only be displayed. Once; syntax "background-repeat:no-repeat;".
The operating environment of this tutorial: Windows 7 system, CSS3&&HTML5 version, Dell G3 computer.
When css uses the background-image attribute to set a background image, sometimes due to image size problems, repeated tiling will occur:
<!DOCTYPE html>
<html>
<head>
<style>
div {
width: 500px;
height: 500px;
border: 2px solid red;
background-image: url(img/nz.png);
}
</style>
</head>
<body>
<div ></div>
</body>
</html>
So how to clear it What if the background image is repeated so that only one is displayed? This requires the use of the background-repeat attribute.
The background-repeat attribute is used to set whether and how to repeat the background image. When the value is "no-repeat", you can specify that the background image will not repeat, that is, the background image will only be displayed once.
<!DOCTYPE html>
<html>
<head>
<style>
div {
width: 500px;
height: 500px;
border: 2px solid red;
background-image: url(img/nz.png);
background-repeat: no-repeat;
}
</style>
</head>
<body>
<div ></div>
</body>
</html>
（Learning video sharing: css video tutorial）
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