CSS使图片变模糊

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效果图

html代码

<div class="blur container">
  <div>
    <img src="https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1548676269108&di=64d110c6c0c15d9bc77c7ffd4f049f1b&imgtype=0&src=http%3A%2F%2Fe.hiphotos.baidu.com%2Fimage%2Fpic%2Fitem%2F6a63f6246b600c33d32b0328174c510fd8f9a184.jpg" />
  </div>
</div>

css代码

<style type="text/css">
body, html {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
}
.container {
  padding: 20px;
  position: relative;
  overflow: hidden;
}
img {
  height: 200px;
  transition: .5s ease-in-out;
}
.container div {
  width: 300px;
  overflow: hidden;
  float: left;
  margin-left: 40px;
}
.blur img {
  filter: blur(15px);
  -webkit-filter: blur(15px);
}
.blur img:hover {
  filter: blur(0);
  -webkit-filter: blur(0);
}
</style>

关键代码 > filter: blur(0); 数值越大越模糊！