.panel {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 400px;
    padding: 30px;
    border-radius: 10px;
}

ul,li{ padding:0;margin:0;list-style:none}

.fv__icon-toolbar-areaSquare,.custom-icon-square-CustomDimension{
    background-image: url('./square.svg');
    background-repeat: no-repeat;
    background-position: center;
}