CSS3-border绘图制作五角星

width: 0;
height: 0;
border-left: 50px solid transparent;
border-right: 50px solid transparent;
border-bottom: 100px solid blue;

#star-five {
margin: 50px 0;
position: relative;
display: block;
color: red;
width: 0px;
height: 0px;
border-right:  100px solid transparent;
border-bottom: 70px  solid red;
border-left:   100px solid transparent;
-moz-transform:    rotate(35deg);
-webkit-transform: rotate(35deg);
-ms-transform:     rotate(35deg);
-o-transform:      rotate(35deg);
}
#star-five:before {
border-bottom: 80px solid red;
border-left: 30px solid transparent;
border-right: 30px solid transparent;
position: absolute;
height: 0;
width: 0;
top: -45px;
left: -65px;
display: block;
content: '';
-webkit-transform: rotate(-35deg);
-moz-transform:    rotate(-35deg);
-ms-transform:     rotate(-35deg);
-o-transform:      rotate(-35deg);

}
#star-five:after {
position: absolute;
display: block;
color: red;
top: 3px;
left: -105px;
width: 0px;
height: 0px;
border-right: 100px solid transparent;
border-bottom: 70px solid red;
border-left: 100px solid transparent;
-webkit-transform: rotate(-70deg);
-moz-transform:    rotate(-70deg);
-ms-transform:     rotate(-70deg);
-o-transform:      rotate(-70deg);
content: '';
}