你能为CSS3渐变添加噪音吗？

是否可以在CSS中为渐变添加噪声？

这是我的径向渐变代码:

body {
    color: #575757;
    font: 14px/21px Arial, Helvetica, sans-serif;
    background-color: #2f3b4b;
    background: -moz-radial-gradient(center 45deg, circle closest-corner, #2f3b4b 0%, #3e4f63 100%);
    background: -webkit-gradient(radial, center center, 10, center center, 900, from(#2f3b4b), to(#3e4f63));
}

我会添加什么来在它上面产生噪音,给它纹理？

这是迄今为止最轻松,最实现这一目标的方法.它纯粹是CSS,非常简单,没有额外的文件 - 没有.好吧,这不是最好的方法,但它运行良好,非常可靠(在非常老的浏览器上测试时从未失败)并且加载速度非常快.

几个月前发现它,并从那时起使用它,只需将此代码复制并粘贴到您的CSS中即可.

background-image: url(data:image/png;base64,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);

然后添加背景颜色

background-color:#0094d0;

演示:JSFiddle

资料来源:https: //coderwall.com/p/m-uwvg

在css中没有当前的方法来向背景添加"噪音".

另一种解决方案是在图形编辑器中创建透明噪声png.然后将该图形作为背景应用于

#box {
  width:250px;
  height:250px;
  position:relative;
  background-size:55px 10px;
  background-repeat: repeat;
  background-image: -webkit-repeating-radial-gradient(1% 21%, closest-corner, rgba(255,0,255,.5), rgba(0,255,255,.5), rgba(0,0,0,1) 1.7%), -webkit-repeating-radial-gradient(51% 51%, closest-corner, rgba(255,255,255,1), rgba(255,255,255,1), rgba(0,255,0,1) 10%); 
}
#box::before {
  content:'';
  width:100%;
  height:100%;
  position:absolute;
  mix-blend-mode:exclusion;
  background-size:12px 22px;
  background-repeat: repeat;
  background-image: -webkit-repeating-radial-gradient(61% 21%, closest-corner, rgba(255,255,255,1), rgba(0,255,0,.5), rgba(3,0,255,1) 20%),  -webkit-repeating-radial-gradient(91% 51%, closest-corner, rgba(255,255,255,1), rgba(255,255,1,.5), rgba(055,255,255,1) 20%);
  left:0;
  z-index:998;
}
#box::after {
  content:'';
  width:100%;
  height:100%;
  position:absolute;
  mix-blend-mode:exclusion;
  background-size:15px 13px;
  background-repeat: repeat;
  background-image: -webkit-repeating-radial-gradient(21% 21%, closest-corner, rgba(255,255,255,1), rgba(0,0,255,.5), rgba(3,0,255,1) 20%);
  left:0;
  top:0;
  z-index:999;
}

body {
    /* white to black linear noise gradient spanning from top to bottom */
    background:
      linear-gradient(rgba(255,255,255,.5), rgba(0,0,0,.5)),
      url('noise.svg');
}

Chloemw

这个屌丝很懒，什么也没留下！

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