css 三角
css border实现三角形绘制
HTML
<div class="t"></div>
CSS
.t {
width: 0px;
height: 0px;
border-top: 50px solid transparent;
border-right: 50px solid red;
border-bottom: 50px solid transparent;
/* border-left: 50px solid orange; */
}
<div class="t"></div>
.t {
width: 0px;
height: 0px;
border-top: 50px solid transparent;
border-right: 50px solid red;
border-bottom: 50px solid transparent;
/* border-left: 50px solid orange; */
}