HTML 标签权重比较
div a span 1
.box .site-nav 10
#box #site 100
<div width'> 1000
!important 无穷大
.site-nav-r li {} .site-nav-r 10+ 1 li = 权限11
div a span 1
.box .site-nav 10
#box #site 100
<div width'> 1000
!important 无穷大
.site-nav-r li {} .site-nav-r 10+ 1 li = 权限11
