otate(-70deg);
   -ms-transform:     rotate(-70deg);
   -o-transform:      rotate(-70deg);
   content: '';
}
            </style>
<p></p>
</div>
<div class="shape">
<h5><span class="ez-toc-section" id="%E4%BA%94%E8%BE%B9%E5%BD%A2"></span>五边形<span class="ez-toc-section-end"></span></h5>
<div id="pentagon"></div>
<style contenteditable=""> 
#pentagon {
    position: relative;
    width: 54px;
    border-width: 50px 18px 0;
    border-style: solid;
    border-color: #f66 transparent;
    margin: 50px 0px