html,body,#wrapper {
    height:100%;
    margin:0;
    padding:0;
    overflow: hidden;
}
#wrapper {
    position:relative;
}

#top, #middle, #bottom {
    position:absolute;
}

#top {
    height:75px;
    width:100%;
    background:grey;
    text-align: center;
    line-height: 75px;
    font-size: 45px;
}

#middle {
    top:75px;
    bottom:50px;
    left: 0;
    right: 0;
    background: #f5f5f5;
    display: flex;
}

#bottom {
    bottom:0;
    height:50px;
    width:100%;
    background:grey;
    text-align: center;
    line-height: 50px;
    font-size: 25px;
}

#top, #bottom {
    color: #f5f5f5;
    font-family: Calibri, serif;
}

.absolute-all {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
}

#left-map {
    right: 50%;
}

#right-map {
    left: 50%;
}