如何在css3中创建多色边框

Question

如何在css3下面创建多色边框？

Answer 1

您可以使用:after或:before psuedo元素和css linear-gradient执行此操作，如下所示：

body {
  background: #ccc;
}

.box {
  text-align: center;
  position: relative;
  line-height: 100px;
  background: #fff;
  height: 100px;
  width: 300px;
}

.box:after {
  background: linear-gradient(to right, #bcbcbc 25%,#ffcd02 25%, #ffcd02 50%, #e84f47 50%, #e84f47 75%, #65c1ac 75%);
  position: absolute;
  content: '';
  height: 4px;
  right: 0;
  left: 0;
  top: 0;
}

<div class="box">Div</div>

Answer 2

您可以不使用pseudo-elements，只需使用border-image: linear-gradient

即可

.fancy-border {
  width: 150px;
  height: 150px;
  text-align:center;
  border-top: 5px solid;
  border-image:   linear-gradient(to right, grey 25%, yellow 25%, yellow 50%,red 50%, red 75%, teal 75%) 5;
}

<div class="fancy-border">
  my content
</div>

Answer 3

试试吧。

<div class="test"></div>

    .test {
      width: 500px;
      height: 100px;
      background-color: #ccc;
      position: relative;
    }

    .test:before, .test:after {
      content: "";
      position: absolute;
      left: 0px;
      right: 0px;
      height: 10px;
      background-image: -webkit-linear-gradient(0deg, red 20px, blue 20px, blue 40px, yellow 40px, yellow 60px, green 60px, green 80px);
      background-image: -ms-linear-gradient(0deg, red 20px, blue 20px, blue 40px, yellow 40px, yellow 60px, green 60px, green 80px);
      background-size: 80px;
    }

    .test:before {
      top: 0px;
    }
    .test:after {
      bottom: 0px;
    }

参见演示

http://jsfiddle.net/yH59y/

Answer 4

body {
  background: #ccc;
}

.box {
  text-align: center;
  position: relative;
  line-height: 100px;
  background: #fff;
  height: 100px;
  width: 300px;
}

.box:after {
  background: linear-gradient(to right, #bcbcbc 25%,#ffcd02 25%, #ffcd02 50%, #e84f47 50%, #e84f47 75%, #65c1ac 75%);
  position: absolute;
  content: '';
  height: 4px;
  right: 0;
  left: 0;
  top: 0;
}

<div class="box">Div</div>