<a href=”javascript:” title=”重新播放” class=”carton_button” >▶</a>

.carton_button {
filter: none;
background-color: rgba(0,0,0,.35);
display: inline-block;
100px;
height: 100px;
line-height: 100px;
border-radius: 8px;
filter: progid:DXImageTransform.Microsoft.Gradient(startColorStr=#76000000,endColorStr=#76000000);color: #fff;
font-size: 48px;
text-align: center;
text-decoration: none;
text-shadow: 0 -1px rgba(0,0,0,.35);
}