html{
    height: 100%;
}

body {
    padding:0;
    height: 100%;
    margin: 0;
}

#map {
    height: 100%; 
    width: 100%;
}

#groups {    
    padding:1rem;
    position: fixed;
    top: 100px;
    left: 10px;
    background: white;
    z-index: 999;
    overflow-y: auto;
}