Element block pseudo-element :before generated with box-sizing content-box background text-shadow outline none height 0px margin 0px padding 0px display block transform position relative box-shadow 1px 1px 1px rgba(0,0,0,0.3) transition overflow visible cursor default opacity 1 border 50px rgba(0,0,0,0) solid font-size 100% width 0px border-radius font-weight normal z-index auto line-height normal float none