.group-right .field--name-field-download a:before {
    content: "";
    background: url(https://www.stamford-avk.com/sites/stamfordavk/files/2022-02/software.png);
    background-repeat: no-repeat;
    height: 48px;
    display: inline-block;
    width: 3.4em;
    background-size: contain;
    margin-top: -20px;
    margin-left:10px;
}