通常我们在制作网页的时候会先在photoshop或者illustrator中绘制一些图案，而网站中图片越多网站所占空间就越大，为了减少网页中图像的使用，我们可以使用css3的新属性例如 transform 、border-radius等绘制不同的图形。常用的图案绘制方法：
圆形

HTML

<div id=”circle”></div>

CSS

 #circle {
width: 120px;
height: 120px;
background: #7fee1d;
-moz-border-radius: 60px;
-webkit-border-radius: 60px;
border-radius: 60px;
}

椭圆

HTML

<div id="oval"></div>

CSS

#oval {
width: 200px;
height: 100px;
background: #e9337c;
-webkit-border-radius: 100px / 50px;
-moz-border-radius: 100px / 50px;
border-radius: 100px / 50px;
}

三角形

CSS

#triangle {
width: 0;
height: 0;
border-bottom: 140px solid #fcf921;
border-left: 70px solid transparent;
border-right: 70px solid transparent;
}

五角星

CSS

#star {
width: 0;
height: 0;
margin: 50px 0;
color: #fc2e5a;
position: relative;
display: block;
border-right: 100px solid transparent;
border-bottom: 70px solid #fc2e5a;
border-left: 100px solid transparent;
-moz-transform: rotate(35deg);
-webkit-transform: rotate(35deg);
-ms-transform: rotate(35deg);
-o-transform: rotate(35deg);
}

#star:before {
height: 0;
width: 0;
position: absolute;
display: block;
top: -45px;
left: -65px;
border-bottom: 80px solid #fc2e5a;
border-left: 30px solid transparent;
border-right: 30px solid transparent;
content: ”;
-webkit-transform: rotate(-35deg);
-moz-transform: rotate(-35deg);
-ms-transform: rotate(-35deg);
-o-transform: rotate(-35deg);
}

#star:after {
content: ”;
width: 0;
height: 0;
position: absolute;
display: block;
top: 3px;
left: -105px;
color: #fc2e5a;
border-right: 100px solid transparent;
border-bottom: 70px solid #fc2e5a;
border-left: 100px solid transparent;
-webkit-transform: rotate(-70deg);
-moz-transform: rotate(-70deg);
-ms-transform: rotate(-70deg);
-o-transform: rotate(-70deg);
}

心形

 CSS

#heart {
position: relative;
}

#heart:before,#heart:after {
content: “”;
width: 70px;
height: 115px;
position: absolute;
background: red;
left: 70px;
top: 0;
-webkit-border-radius: 50px 50px 0 0;
-moz-border-radius: 50px 50px 0 0;
border-radius: 50px 50px 0 0;
-webkit-transform: rotate(-45deg);
-moz-transform: rotate(-45deg);
-ms-transform: rotate(-45deg);
-o-transform: rotate(-45deg);
transform: rotate(-45deg);
-webkit-transform-origin: 0 100%;
-moz-transform-origin: 0 100%;
-ms-transform-origin: 0 100%;
-o-transform-origin: 0 100%;
transform-origin: 0 100%;
}

#heart:after {
left: 0;
-webkit-transform: rotate(45deg);
-moz-transform: rotate(45deg);
-ms-transform: rotate(45deg);
-o-transform: rotate(45deg);
transform: rotate(45deg);
-webkit-transform-origin: 100% 100%;
-moz-transform-origin: 100% 100%;
-ms-transform-origin: 100% 100%;
-o-transform-origin: 100% 100%;
transform-origin: 100% 100%;
}

对话气泡

CSS

 #comment_bubble {
width: 140px;
height: 100px;
background: #088cb7;
position: relative;
-moz-border-radius: 12px;
-webkit-border-radius: 12px;
border-radius: 12px;
}

#comment_bubble:before {
content: “”;
width: 0;
height: 0;
right: 100%;
top: 38px;
position: absolute;
border-top: 13px solid transparent;
border-right: 26px solid #088cb7;
border-bottom: 13px solid transparent;
}