header {
    background-color: #eee;
    height: 70px;
    display: flex;
    justify-content: space-around;
    align-items: center;

}

header a {
    text-decoration: none;
    font-size: 20px;
    color: #212121;
}

#map {
    width: 100%;
    height: 90%%;

}

html, body {
    height: 100%;
}