移动互联网时代，同一张图片在不同屏幕尺寸、不同分辨率的移动设备上会有让人意想不到的效果。所以CSS定义按钮的样式会更好，由于CSS3的存在，效果并不比图片按钮差。发现一个CSS3按钮方案，非常合我的口味。效果如下


直接放样式，从官方给的Demo里拿出来的：

/* awesome */
.awesome, .awesome:visited{
    background: #222; 
    display: inline-block; 
    padding: 5px 10px 6px; 
    color: #fff; 
    text-decoration: none;
    -moz-border-radius: 5px; 
    -webkit-border-radius: 5px;
    -moz-box-shadow: 0 1px 3px rgba(0,0,0,0.5);
    -webkit-box-shadow: 0 1px 3px rgba(0,0,0,0.5);
    text-shadow: 0 -1px 1px rgba(0,0,0,0.25);
    border-bottom: 1px solid rgba(0,0,0,0.25);
    position: relative;
    cursor: pointer;
}
.awesome:hover{ 
    background-color: #111; color: #fff; 
}
.awesome:active{ 
    top: 1px;
}
/* Sizes ---------- */
.small.awesome, .small.awesome:visited{
    font-size: 11px; 
}
.awesome, .awesome:visited,
.medium.awesome, .medium.awesome:visited{
    font-size: 13px; 
    font-weight: bold; 
    line-height: 1; 
    text-shadow: 0 -1px 1px rgba(0,0,0,0.25); 
}
.large.awesome, .large.awesome:visited {
    font-size: 14px;
    padding: 8px 14px 9px;
}
/* Colors ---------- */
.green.awesome, .green.awesome:visited{
    background-color: #91bd09;
}
.green.awesome:hover{
    background-color: #749a02;
}
.blue.awesome, .blue.awesome:visited{
    background-color: #2daebf; 
}
.blue.awesome:hover{
    background-color: #007d9a; 
}
.red.awesome, .red.awesome:visited{
    background-color: #e33100;
}
.red.awesome:hover{
    background-color: #872300;
}
.magenta.awesome, .magenta.awesome:visited{
    background-color: #a9014b;
}
.magenta.awesome:hover{
    background-color: #630030;
}
.orange.awesome, .orange.awesome:visited{
    background-color: #ff5c00;
}
.orange.awesome:hover	{
    background-color: #d45500;
}
.yellow.awesome, .yellow.awesome:visited{
    background-color: #ffb515;
}
.yellow.awesome:hover{
    background-color: #fc9200;
}
/* awesome */

使用方法也很简单，给连接或按钮增加相应的Class：

<a class="large yellow awesome">Awesome Yellow Button »</a>

<button class="large awesome">Super Awesome Button »</button>

Demo：http://www.zurb.com/blog_uploads/0000/0617/buttons-03.html
按钮页面：http://www.zurb.com/article/266/super-awesome-buttons-with-css3-and-rgba