Template:Stack/sandbox/styles.css

.stack-sb {
	box-sizing: border-box;
}

.stack-sb > div {
	margin: 1px;
	overflow: hidden;
}

@media all and (min-width: 720px) {
	.stack-clear-left {
		float: left;
		clear: left;
	}
	
	.stack-clear-right {
		float: right;
		clear: right;
	}
	
	.stack-left {
		float: left;
	}
	
	.stack-right {
		float: right;
	}
	
	.stack-margin-clear-left {
		float: left;
		clear: left;
		margin-right: 1em;
	}
	
	.stack-margin-clear-right {
		float: right;
		clear: right;
		margin-left: 1em;
	}
	
	.stack-margin-left {
		float: left;
		margin-right: 1em;
	}
	
	.stack-margin-right {
		float: right;
		margin-left: 1em;
	}
}