th[role=columnheader]:not([data-sort-method="none"]) {
	cursor: pointer;
}

th[role=columnheader]:not([data-sort-method="none"]):after {
	content: '';
	display: inline-block;
	vertical-align: middle;
	margin: 0 0 0 1ch;
	border-width: 0 4px 4px;
	border-style: solid;
	border-color: #CCCCCC transparent;
	opacity: 0.3;
	-ms-user-select: none;
	-webkit-user-select: none;
	-moz-user-select: none;
	user-select: none;
}

th[aria-sort=ascending]:not([data-sort-method="none"]):after {
	border-bottom: none;
	border-width: 4px 4px 0;
}

th[aria-sort]:not([data-sort-method="none"]):after {
	visibility: visible;
	opacity: 0.8;
}

th[role=columnheader]:not([data-sort-method="none"]):hover:after {
	visibility: visible;
	opacity: 1;
}