Element block pseudo-element :before generated with line-height 1 margin -1px padding 0px font-size 16px border 1px rgba(0,0,0,1) solid display block font-weight normal overflow visible position relative box-shadow 5px 5px 8px rgba(0,0,0,0.4) transition background text-shadow width 100% height 100% box-sizing content-box cursor default z-index auto status float none border-radius transform