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