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