CSS：border绘制不同的图形

[smileyby]

这里用CSS的border属性绘制了一些简单的图形，加深对border这个属性的认识
// 扇形
.angle {
width: 0;
height: 0;
border-top: 100px solid pink;
border-bottom: 100px solid red;
border-left: 100px solid yellow;
border-right: 100px solid green;
border-radius: 100px;
}

// 三角形
.angle {
width: 0;
height: 0;
border-top: 100px solid pink;
border-bottom: 100px solid red;
border-left: 100px solid yellow;
border-right: 100px solid green;
}

// 梯形
.angle {
width: 100px;
border-top: 100px solid pink;
border-bottom: 100px solid transparent;
border-left: 100px solid transparent;
border-right: 100px solid transparent;
}

// 回力标
.angle {
width: 0;
height: 0;
border-top: 100px solid transparent;
border-bottom: 22px solid red;
border-left: 22px solid yellow;
border-right: 100px solid transparent;
}

// 橄榄球
.angle {
width: 0;
height: 0;
border-top: 22px solid pink;
border-bottom: 22px solid red;
border-left: 22px solid yellow;
border-right: 100px solid green;
border-radius: 50%;
}

// 甜甜圈
.angle {
width: 100px;
height: 100px;
border-top: 100px solid pink;
border-bottom: 100px solid red;
border-left: 100px solid yellow;
border-right: 100px solid green;
border-radius: 50%;
}

// 信封
.angle {
width: 0;
height: 0;
border-top: 60px solid #eacb77;
border-bottom: 50px solid #f3dda3;
border-left: 100px solid #f3dda3;
border-right: 100px solid #f3dda3;
}