.filesFieldAddButton {
    width:24px;
    height:24px;
    position:absolute;
    border-radius:13px;
    background-color:#FFFFFF;
    border:1px solid #DDDDDD;
}
    .filesFieldAddButton:hover {
        background-color: #60D9FE;
        border: 1px solid color(LightBlue,500);
    }
    .filesFieldAddButton:active {
        background-color: #40B9DE;
        border: 1px solid color(LightBlue,500);
    }
.filesFieldAddIcon {
    width: 18px;
    height: 18px;
    left:3px;
    top:3px;
    position: absolute;
}