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