圆:
<code>.yuan{ width:100px; height:100px; -moz-border-radius:50%; -webkit-border-radius:50%; border-radius:50%; background-color:red; } <div class="yuan"></div></code>
椭圆
<code>.oval { width: 200px; height: 100px; background-color: red; -moz-border-radius: 100px / 50px; -webkit-border-radius: 100px / 50px; border-radius: 100px / 50px; } <div class="oval"></div></code>
箭头:
<code>.arrow{ content: ''; position: absolute; width: 30px; height: 30px; border: 10px solid #f5b24a; -webkit-transform: rotate(-135deg); -moz-transform: rotate(-135deg); -o-transform: rotate(-135deg); -ms-transform: rotate(-135deg); transform: rotate(-135deg); border-top: none; border-right: none; top: 9px; } <span class="arrow"></span></code>
三角形:
<code>.rencentle { width: 0; height: 0; border-left: 50px solid transparent; border-right: 50px solid transparent; border-bottom: 100px solid red; } <div class="rencentle"></div></code>