Element block pseudo-element :before generated with box-sizing content-box margin 3px cursor default box-shadow 1px 1px 1px rgba(0,0,0,0.3) overflow hidden transform padding 5px height 50px display block border 2px rgba(0,0,0,1) solid z-index auto font-weight normal line-height 1 position static width 50px float none border-radius transition text-shadow 1px 1px 1px rgba(0,0,0,0.2) background font-size 16px