Math/modules/ve-math/ve.ce.MWMathNode.css

/**
 * Hide math tag completely to avoid extra bounding boxes for Chrome, Safari, Android...
 * Browser-specific hacks are bad but let's use that for now...
 * See http://browserhacks.com
 */
@media screen and (-webkit-min-device-pixel-ratio: 0) {
	.ve-ce-mwMathNode .mwe-math-mathml-a11y {
		display: none !important;
	}
}