kground: lightblue;
			}

			.box-sizing-elem {
				width: 100%;
				padding: 0 10%;
			}

			#iframe iframe {
				background-clip: content-box;
			}

			#tabindex a:focus,
			#tabindex button:focus {
				outline: 5px solid red;
			}

		</style>
	</head>

	<body>
		<div class="test">
			<h1 class="test-title">SUIT CSS: <a href="https://github.com/suitcss/base">base</a> styles tests</h1>
			<h2 class="test-describe">h1-h6</h2>
			<h3 class="test-it">have no margin</h3>
			<div class="test-run">
				<h1 class