Element button pseudo-element :before generated with transition height auto transform border 0px rgba(0,0,0,1) solid padding 20px position static border-radius box-sizing content-box float none z-index auto margin 0px overflow hidden font-weight normal box-shadow 1px 1px 1px rgba(0,0,0,0.3) cursor default line-height 1 width 160px background font-size 16px display block text-shadow 2px 1px 1px rgba(0,0,0,0.2)