.imrediicon-escalation:before {
    content: url("images/escalation.6620815cc4c7.svg");
}

.imrediicon-circle:before {
       content: '';
       display: inline-block;
       width: 10px;
       height: 10px;
       -moz-border-radius: 7.5px;
       -webkit-border-radius: 7.5px;
       border-radius: 7.5px;
    }