.box{width: 100px;height: 100px;border:10px solid #ddd;border-image: -webkit-linear-gradient(#ddd,#000) 30 30;border-image: -moz-linear-gradient(#ddd,#000) 30 30;border-image: linear-gradient(#ddd,#000) 30 30;}
效果:
时间:2020-10-16 20:01:54
.box{width: 100px;height: 100px;border:10px solid #ddd;border-image: -webkit-linear-gradient(#ddd,#000) 30 30;border-image: -moz-linear-gradient(#ddd,#000) 30 30;border-image: linear-gradient(#ddd,#000) 30 30;}
效果: