.tooltip-doc {
    position: absolute;
    z-index: 999;
    left: -100%;
    top: -100%;
    background-color: #fff;
    padding: 10px;
    border: 1px solid #dedede;
    border-radius: 5px;
    display: inline-block;
    font-family: 'Arial', sans-serif;
    font-size: 14px
}

a.signature-doc::before {
    content: '' !important;
    display: inline-block;
    width: 40px;
    height: 40px;
    background-image: url(../img/ehcp.png);
    background-repeat: no-repeat;
    background-size: contain;
    position: relative;
    top: 10px
}