Css - define the same property

In framework / engagement css

.ipsReact_button {
	width: 42px;
	height: 42px;
	border-radius: 42px;
	line-height: 42px;
	padding: 5px;
	display: block;
	text-align: center;
	background: transparent;
	border: 1px solid transparent;
	position: relative;
	transition: 0.1s all ease-in-out;
	transition-delay: 0.4s;
	position: relative;
	filter: grayscale(100%) brightness(160%);
}

"position:relative" is set twice.