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