div {
width:400px;
height: 300px;
line-height: 300px;
background: #4bb1ff;
font-size: 100px;
text-align: center;
color: #fff;
text-shadow:
1px 1px 0 #158af7,
2px 2px 0 #158af7, /* end of 2 level deep grey shadow */
3px 3px 0 #158af7,
4px 4px 0 #158af7,
5px 5px 0 #158af7,
6px 6px 0 #158af7; /* end of 4 level deep dark shadow */
}
css3D文字效果
原文地址：https://www.cnblogs.com/loveAline/p/10275645.html