Module:Citation/CS1/styles.css

.cs1_lock_free a {
	background: url(//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png) no-repeat;
	background-position: right .1em center;
	}

.cs1_lock_limited a,
.cs1_lock_registration a {
	background: url(//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png) no-repeat;
	background-position: right .1em center;
	}

.cs1_lock_subscription a {
	background: url(//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png) no-repeat;
	background-position: right .1em center;
	}