Element block pseudo-element :before generated with transition box-sizing content-box font-weight normal line-height 1 font-size 16px z-index auto float none transform overflow hidden width 160px border-radius display block position static border 0px rgba(0,0,0,1) solid background margin 0px height auto box-shadow 1px 1px 1px rgba(0,0,0,0.3) cursor default text-shadow 1px 1px 1px rgba(0,0,0,0.2) padding 20px