css修改具体某个li的样式

.eastern-commodity li{margin-right:2%;margin-bottom:20px;box-shadow: 0 2px 4px 0 rgba(0,0,0,0.08);}

/* 修改第二个li的样式*/

.eastern-commodity li:nth-child(2){margin-right:0;}

/* 修改第三个li的样式*/

.eastern-commodity li:nth-child(3){margin-right:0;}

/* 修改最后一个li的样式*/

.eastern-commodity li:last-child{margin-right:0;}