CSS 样式

.button {

display: inline-block;outline: none;cursor: pointer;text-align: center;text-decoration: none;font: 14px/100% Arial, Helvetica, sans-serif;padding: .5em 2em .55em;text-shadow: 0 1px 1px rgba(0,0,0,.3);-webkit-border-radius: .5em; -moz-border-radius: .5em;border-radius: .5em;-webkit-box-shadow: 0 1px 2px rgba(0,0,0,.2);-moz-box-shadow: 0 1px 2px rgba(0,0,0,.2);box-shadow: 0 1px 2px rgba(0,0,0,.2);}

1）Button 圆头效果