.help-container{ height: 191px; width: 100%; border: 1px solid #aaaaaa; border-radius: 5px; box-sizing: border-box; float: left; width: 100%; height: 20%; clear: both; margin: 0; position: absolute; top: 80%; left: 50%; -ms-transform: translate(-50%, -50%); transform: translate(-50%, -50%); div { height: inherit; float: left; } } .container { height: 100%; position: relative; } .center { margin: 0; position: absolute; top: 50%; left: 50%; -ms-transform: translate(-50%, -50%); transform: translate(-50%, -50%); }