.tocAuthors {
     background: url(https://i.ibb.co/NtvnFwr/users-group2.png) 1px 2px no-repeat rgba(0,0,0,0);
	 margin-top: 0px;
     padding-left: 30px;
}
.tocDOI,
.articleDOI {
     background: url(https://i.ibb.co/BszYKwV/icon-doi.png) 1px 2px no-repeat rgba(0, 0, 0, 0);
     margin-top: 0px;
     padding-left: 30px;
}