Element block pseudo-element :before generated with margin 0px overflow hidden text-shadow 1px 1px 1px rgba(0,0,0,0.2) cursor default background display block float none z-index auto line-height 1 transition transform position static height 20px font-size 16px box-sizing content-box padding 0px width 15px border-radius border 0px rgba(0,0,0,1) solid font-weight normal box-shadow 1px 1px 1px rgba(0,0,0,0.3)