Element button pseudo-element :before generated with box-sizing content-box transition width 40px overflow hidden display block height 40px line-height 1 padding 20px background border 0px rgba(0,0,0,1) solid box-shadow 1px 1px 1px rgba(0,0,0,0.3) border-radius font-weight normal position static text-shadow transform z-index auto cursor default font-size 16px margin 0px float none