#df_book_full {
			height: 100vh;
		}
		.logo{
			position: absolute;
			top: 10px;
			left: 50px;
			z-index: 99999;
			display: inline-block;
			display: none;
		}
		.logo img{
			max-width: 100px;
		}
		@media all and ( min-width: 1000px) {
			.df-floating .df-ui-controls {
				margin-left: 55px;
			}		
		}
		@media all and ( max-width: 1000px) {
			#df_book_full {
				height: calc(100vh - 60px);
			}
			.logo{
				display: inline;
			}
		}
		
		body {
			height: 100%;
		}