#fabu {
height:3rem;
宽度:3rem;
位置:固定!重要;
右:5%;
底部:5%;
z-index:9999;
填充:1px;
边框:实心1px#169BB4;
border-radius:50%;
}
#fabu>div {
width: 100%;
height: 100%;
border-radius: 50%;
/*background-color: #169BB4;*/
background: -webkit-radial-gradient(#33cfec, #169BB4, #14889e);
/* Safari 5.1 - 6.0 */
background: -o-radial-gradient(#33cfec, #169BB4, #14889e);
/* Opera 11.6 - 12.0 */
background: -moz-radial-gradient(#33cfec, #169BB4, #14889e);
/* Firefox 3.6 - 15 */
background: radial-gradient(#33cfec, #169BB4, #14889e);
/* 标准的语法(必须放在最后) */
text-align: center;
line-height: 3rem;
}
#fabu>div>i {
color: #fff;
}
<div id="fabu">
<div id="manage.html" οnclick="clicked(this.id);">
<i>+</i>
</div>
</div>