CSS3繪製各類圖形

1. 三角形

#triangle{
    width:0;
    height: 0;
    border-left:25px solid transparent;
    border-right:25px solid transparent;
    border-bottom:50px solid #f60;
}

同理：半圓

#half-round{
    border:4px solid #ccc;
    width:30px;
    height: 30px;
    text-align: center;
    line-height: 30px;
    color:#ccc;
    border-radius: 50%;
    border-bottom-color: transparent;
}
.active{
    border-left-color: #f60 !important; 
}

2.星形

#star {
    width: 0;
    height: 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);
}

3.六邊形

#hexagon {
    width: 100px;
    height: 55px;
    background: #fc5e5e;
    margin: 20px auto;
    position: relative;
}

#hexagon:before {
    content: "";
    width: 0;
    height: 0;
    position: absolute;
    top: -25px;
    left: 0;
    border-left: 50px solid transparent;
    border-right: 50px solid transparent;
    border-bottom: 25px solid #fc5e5e;
}

#hexagon:after {
    content: "";
    width: 0;
    height: 0;
    position: absolute;
    bottom: -25px;
    left: 0;
    border-left: 50px solid transparent;
    border-right: 50px solid transparent;
    border-top: 25px solid #fc5e5e;
}

4.心形

#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%;
}

5.無窮符號

#infinity {
    width: 220px;
    height: 100px;
    margin:auto;
    position: relative;
}

#infinity:before,#infinity:after {
    content: "";
    width: 60px;
    height: 60px;
    position: absolute;
    top: 0;
    left: 0;
    border: 20px solid #06c999;
    -moz-border-radius: 50px 50px 0;
    border-radius: 50px 50px 0 50px;
    -webkit-transform: rotate(-45deg);
    -moz-transform: rotate(-45deg);
    -ms-transform: rotate(-45deg);
    -o-transform: rotate(-45deg);
    transform: rotate(-45deg);
}

#infinity:after {
    left: auto;
    right: 0;
    -moz-border-radius: 50px 50px 50px 0;
    border-radius: 50px 50px 50px 0;
    -webkit-transform: rotate(45deg);
    -moz-transform: rotate(45deg);
    -ms-transform: rotate(45deg);
    -o-transform: rotate(45deg);
    transform: rotate(45deg);
}

6.消息氣泡

#comment_bubble {
    width: 140px;
    height: 100px;
    background: #088cb7;
    position: relative;
    margin: 20px auto;
    -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;
}