#guitar-tab{
	width: calc(50% - 22px);
	height: calc(100% - 20px);
	border: none;
	border-right: solid 1px rgb(204, 204, 204);
	padding: 10px;
	font-size: 1vw;
	overflow-x: hidden;
	float:left;
	background: url('guitar.png') center center no-repeat;
	background-size: auto 90%;
}

#mandolin-tab{
	width: calc(50% - 20px);
	height: calc(100% - 20px);
	font-size: 0.8vw;
	overflow-x: hidden;
	float: left;
	padding: 10px;
	background: url('mandolin.png') center center no-repeat;
	background-size: auto 90%;
}

pre {
	text-align: center;
}

#mandolin-tab:focus{
	background: #F9F9F9;
}

#guitar-tab:focus{
	background: #F9F9F9;
}

h2 {
	margin: 0;
	font-family: "Helvetica Neue", Helvetica, Arial;
	font-size: 13px;
	color: black;
}

div:focus{
    outline: 0;
}


body, html {
	height: 100%;
	margin: 0;
	overflow: hidden;
	font-family: SourceCodeProRegular, Menlo, Monaco, consolas, monospace;
	font-size: 14px;
	color: rgb(56, 56, 56);
}