.dibu{
				width: 100%;
				height: 80px;
				position: fixed;
				bottom: 0px;
				text-align: center;
				left: 0px;
			}
			.mdui-fab-mini {
			    width: 80px;
			    min-width: 80px;
			    height: 80px;
			}
			.mdui-fab .mdui-icon {
			    position: absolute;
			    top: 0;
			    left: 0;
			    width: 0px;
			    margin-top: 16px;
			    margin-left: 13px;
			    text-align: center;
			    line-height: 50px;
				font-size: 55px;
				color: #fff;
			}