左边框图像和右边框图像与边框颜色混合的 CSS 边框图像渐变

Question

border-top-color #9b9c9d，border-bottom-color #f6f9fc。渐变旨在将border-left上的顶部颜色转换为底部颜色并border-right。

如何将border-left-image和border-right-image与border-top-color和border-bottom-color混合？

.HTML

<a class="button-style">Evil Whales</a>

.CSS

.button-style
{
 background: linear-gradient(to bottom,
   rgba(129,232,117,1) 0%,
   rgba(129,232,117,1) 50%,
   rgba(62,179,48,1) 51%,
   rgba(62,179,48,1) 100%);
 border-top-color: #9b9c9d;
 border-left-image: linear-gradient(to bottom,
   rgba(155,156,157,1) 0%,
   rgba(246,249,252,1) 100%);
 border-bottom-color: #f6f9fc;
 border-right-image: linear-gradient(to bottom,
   rgba(155,156,157,1) 0%,
   rgba(246,249,252,1) 100%);
 border-style: solid;
}

Answer 1

你可以堆叠两个渐变并使用background-size、padding和background-clip来绘制border：

.button-style {
  background: linear-gradient(to bottom, rgba(129, 232, 117, 1) 0%, rgba(129, 232, 117, 1) 50%, rgba(62, 179, 48, 1) 51%, rgba(62, 179, 48, 1) 100%) no-repeat
  /* use for background */
  , linear-gradient(to bottom, rgba(155, 156, 157, 1) 0%, rgba(246, 249, 252, 1) 100%)
  /* use for border */
  ;
  background-size: 100% 100%, auto auto;
  background-clip: content-box, border-box;
  padding: 3px;
}
html {
  padding: 3em;
  background: gray;

<a class="button-style">Evil Whales</a>

Answer 2

让它工作，尽管只是在Chrome中，Firefox和IE不起作用。

background: linear-gradient(to bottom,
  rgba(129,232,117,1) 0%,
  rgba(129,232,117,1) 50%,
  rgba(62,179,48,1) 51%,
  rgba(62,179,48,1) 100%);
border-image: linear-gradient(to bottom,
  rgba(155,156,157,1) 0%,
  rgba(246,249,252,1) 100%) 25 30 10 20 repeat;
border-image-repeat: stretch;
border-width: 4px;

应该注意的是，没有border-left-image和相关属性;不幸的是，没有一个更好的CSS属性。