Element button pseudo-element :before generated with font-size 16px width 40px z-index auto padding 20px background box-shadow 5px 5px 8px rgba(0,0,0,0.4) overflow visible transition border 4px #000000 solid box-sizing content-box line-height normal transform float left display block cursor pointer border-radius font-weight normal text-shadow 4px 0px 9px rgba(0,0,0,1) height 25px position static margin 10px