theme.css

html {
    height: 100%;
}

body {
    height: 100%;
}

#map {
    flex-grow: 1;
}

.toGrayscale img {
    filter: grayscale(1);
}

.dropSheet {
    background-color /**/: #FFFFFF;
    border-width: 0px;
    border-style: solid;
    border-color: #555555;
    padding: 5px;
}

#rightcontainer {
    position: absolute;
    right: 20px;
    bottom: 30px;
    z-index: 500;
    visibility: hidden;
}

#legend {
    visibility: hidden;
}

#progress {
    display: block;
    position: absolute;
    z-index: 1000;
    left: 70px;
    top: 80px;
    width: 200px;
    height: 50px;
    background-color: #fff;
    background-color: rgba(255, 255, 255, 0.7);
    border-radius: 4px;
    padding: 2px;
}

#progress-bar {
    width: 0;
    /*height: 100%;*/
    height: 20px;
    background-color: #76A6FC;
    border-radius: 4px;
}


/*https://codepen.io/huange/pen/QGbRxX*/
.wrapper {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 300px;
    text-align: center;
    transform: translateX(-50%);
}

.spanner {
    position: absolute;
    top: 50%;
    left: 0;
    background: #2a2a2a;
    width: 100%;
    display: block;
    text-align: center;
    height: 300px;
    color: #FFF;
    transform: translateY(-50%);
    z-index: 1000;
    visibility: hidden;
}

.overlay {
    position: fixed;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    visibility: hidden;
}

.loader,
.loader:before,
.loader:after {
    border-radius: 50%;
    width: 2.5em;
    height: 2.5em;
    -webkit-animation-fill-mode: both;
    animation-fill-mode: both;
    -webkit-animation: load7 1.8s infinite ease-in-out;
    animation: load7 1.8s infinite ease-in-out;
}

.loader {
    color: #ffffff;
    font-size: 10px;
    margin: 80px auto;
    position: relative;
    text-indent: -9999em;
    -webkit-transform: translateZ(0);
    -ms-transform: translateZ(0);
    transform: translateZ(0);
    -webkit-animation-delay: -0.16s;
    animation-delay: -0.16s;
}

.loader:before,
.loader:after {
    content: '';
    position: absolute;
    top: 0;
}

.loader:before {
    left: -3.5em;
    -webkit-animation-delay: -0.32s;
    animation-delay: -0.32s;
}

.loader:after {
    left: 3.5em;
}

@-webkit-keyframes load7 {
    0%,
    80%,
    100% {
        box-shadow: 0 2.5em 0 -1.3em;
    }
    40% {
        box-shadow: 0 2.5em 0 0;
    }
}

@keyframes load7 {
    0%,
    80%,
    100% {
        box-shadow: 0 2.5em 0 -1.3em;
    }
    40% {
        box-shadow: 0 2.5em 0 0;
    }
}

.show {
    visibility: visible;
}

.hide {
    visibility: hidden;
}

.spanner, .overlay {
    opacity: 0;
    -webkit-transition: all 0.3s;
    -moz-transition: all 0.3s;
    transition: all 0.3s;
}

.spanner.show, .overlay.show {
    opacity: 1
}

.spanner.hide, .overlay.hide {
    opacity: 0
}