JS Bin
/* 背景图片实现 */
.background-box {
width: 400px;
height: 100px;
/* 透明色替换为当前背景底色 */
background:linear-gradient(-135deg, transparent 50px, red , yellow) top right;
background-size: 50% 50%;
background-repeat: no-repeat;
}
/* 边框实现 */
.border-box {
width: 100px;
height: 50px;
background: linear-gradient(#e66465, #9198e5);
position: relative;
}
.border-box::after {
position: absolute;
content: "";
right: 0;
top: 0,
width: 0;
height: 0;
border-bottom: 50px solid transparent;
border-right: 50px solid #FFF; /*颜色替换为当前卡片底色*/
border-left: 50px solid transparent;
}
原文：/Lewiskycc/p/12809139.html
