Sideways Left Tabs
#RightMenu #Tabs > li { display: block; width: 3em; height: 4em; line-height: 4em; border-top: 1px solid #000000; border-bottom: 1px solid #000000; border-left: 1px solid #000000; } #RightMenu #Tabs > li > span { display: inline-block; line-height: 1em; -webkit-transform: rotate(-90deg); text-align: center; }
Source: stackoverflow.com