html {
    height:100%;
    background-color: green;
}
body {
    height:100%;
    padding:0;
    margin:0;
    background-color: green;
}
#map-canvas {
    width: 100%;
    height:-webkit-fill-available;
}

#buttons {
    padding:0;
    margin:0;
    position: absolute;
    top:10px;
    left:15px;
    z-index:9999999;
}

#buttons li {
    float: left;
    list-style: none;
    text-align: center;
    background-color: #FFFFFF;
    margin-right:0;
    width:70px;
}

#buttons li a {
    font-family: Arial, Helvetica, sans-serif;
    font-size:12px;
    text-decoration: none;
    color:#333333;
    display: block;
    padding:6px 2px 6px 2px;
    margin:0;
    border:1px solid lightgray;
    box-shadow: 3px 3px 3px lightgray;
  }
  
  #buttons li a:hover {
    text-decoration: none;
    color:red;
    cursor: pointer;    
  }

.loader {
    background-color:#fff;
    padding:15px;
    text-align: center;
    position: absolute;
    margin-left:42%;
    margin-top:30%;
    z-index:9999;
    box-shadow: 3px 3px 3px lightgray;
}
.loader h3 {
    margin:0 0 20px 0;
}


@media screen and (min-width: 400px) {
    .loader {
        background-color:#fff;
        padding:15px;
        text-align: center;
        position: absolute;
        margin-left:20%;
        margin-top:40%;
        z-index:9999;
        box-shadow: 3px 3px 3px lightgray;
    }
    .loader h3 {
        margin:0 0 20px 0;
    }
}

@media screen and (min-width: 800px) {
    .loader {
        background-color:#fff;
        padding:15px;
        text-align: center;
        position: absolute;
        margin-left:42%;
        margin-top:30%;
        z-index:9999;
        box-shadow: 3px 3px 3px lightgray;
    }
    .loader h3 {
        margin:0 0 20px 0;
    }
}