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首尾渐变

html代码

<span>首尾渐变</span>

css代码

.index-yinhang h2 span{    position: relative;    display: inline-block;    padding: 6px 4px;    color: #2a2a2a;}span::after{    content: "";    position: absolute;    left: 0;    bottom: 0;    width: 100%;    height: 1px;    background: #000;    background: linear-gradient(left,rgba(255,0,0,0),rgba(0,0,0,1) 30%,rgba(0,0,0,1) 70%,rgba(255,0,0,0));    background: -webkit-linear-gradient(left,rgba(255,0,0,0),rgba(0,0,0,1) 30%,rgba(0,0,0,1) 70%,rgba(255,0,0,0));    background: -moz-gradient(left,rgba(255,0,0,0),rgba(0,0,0,1) 30%,rgba(0,0,0,1) 70%,rgba(255,0,0,0));    background: -ms-linear-gradient(left,rgba(255,0,0,0),rgba(0,0,0,1) 30%,rgba(0,0,0,1) 70%,rgba(255,0,0,0));}*, :after, :before {    box-sizing: border-box;    -webkit-box-sizing: border-box;    -moz-box-sizing: border-box;    -webkit-tap-highlight-color: rgba(0,0,0,0);}
效果如下:

技术分享

备注:
background: linear-gradient(left,rgba(255,0,0,0),rgba(0,0,0,1) 30%,rgba(0,0,0,1) 70%,rgba(255,0,0,0));
rgba(0,0,0,1) 30%,rgba(0,0,0,1) 70% 为黑色可自定义颜色,首尾是透明的不用换

首尾渐变