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/* [[Category:CSS from Wikimedia]] */
.math_proof { 
	border: thin solid #aaa; 
	margin: 1em 2em; 
	padding: 0.5em 1em 0.4em;
}

@media (max-width: 500px) { 
	.math_proof {
		margin: 1em 0;
		padding: 0.5em 0.5em 0.4em;
	}
}