I've tried quite a few variants with no luck. What am I missing?
#menu {
position: absolute;
width: 50px;
height: 250px;
top: 15px;
left: 0;
background-color: #ee2e24;
color: white;
}
#menu span {
transform: rotate(90deg);
transform-origin: left top 0;
}
<div id="menu"><span>MAIN MENU</span></div>