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