style.css

#map {
    position: fixed;
    top: 0px;
    left: 0px;
    height: 100%;
    width: 100%;
}

h1 {
    position: fixed;
    left: calc(50% - 200px);
    width: 400px;
    color: black;
    text-align: center;
}
h1 span {
    background-color: rgba(123, 198, 200, 0.75);
    padding: 10px;
    border-radius: 10px;
}

.leaflet-tile-pane {
    -webkit-filter: grayscale(55%);
    filter: grayscale(55%);
}

table {
    border-collapse: collapse;
    width: 100%;
}

th,
td {
    text-align: left;
    padding: 8px;
}

tr:nth-child(even) {
    background-color: #f2f2f2;
}

th {
    background-color: #04aa6d;
    color: white;
}

.route-popup {
    width: 600px;
}

form label {
    color: white;
}

.global-scores {
    position: fixed;
    bottom: 20px;
    left: 20px;
    padding: 10px;
    border-radius: 10px;
    max-width: 200px;
    background-color: lightblue;
}

input[type="text"],
select,
input[type="number"] {
    width: 94%;
    padding: 12px 20px;
    margin: 8px 0;
    display: inline-block;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

input[type="submit"] {
    padding: 4px 6px;
    margin: 4px 0;
    display: inline-block;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

.sidebar {
    height: 100%;
    width: 0;
    position: fixed;
    z-index: 1;
    top: 0;
    left: 0;
    background-color: #111;
    overflow-x: hidden;
    transition: 0.5s;
    padding-top: 60px;
    color: white;
}

.sidebar a {
    padding: 8px 8px 8px 32px;
    text-decoration: none;
    font-size: 25px;
    color: #818181;
    display: block;
    transition: 0.3s;
}

.sidebar a:hover {
    color: #f1f1f1;
}

.sidebar .closebtn {
    position: absolute;
    top: 0;
    right: 25px;
    font-size: 36px;
    margin-left: 50px;
}

@media screen and (max-height: 450px) {
    .sidebar {
        padding-top: 15px;
    }
    .sidebar a {
        font-size: 18px;
    }
}

.Peugeot-marker {
    filter: hue-rotate(120deg);
}

.Fiat-marker {
    filter: hue-rotate(240deg);
}