css配置box-shadow屬性實現div只有左右陰影
可靠的答案來源於百度知道:
https://zhidao.baidu.com/question/1690478193874341868.html
實例:
-webkit-box-shadow: #1E9FFF -8px 0px 8px -8px, #1E9FFF 8px 0 8px -8px;
-moz-box-shadow: #1E9FFF -8px 0px 8px -8px, #1E9FFF 8px 0 8px -8px;
box-shadow: #1E9FFF -8px 0px 8px -8px, #1E9FFF 8px 0 8px -8px;