#mainContainer {
    padding: 25px 100px 100px 100px;
}

.col {
    padding: 12px;
    background: thistle;
    background-repeat: no-repeat;
    color: white;
    cursor: pointer;
}

.wall {
    background-image: url(https://media.gettyimages.com/photos/old-brick-wall-background-picture-id184111906?b=1&k=6&m=184111906&s=170667a&w=0&h=SaSbs0CdSvvog-wOk3qsXfmJtIUndL5w0kA9gsBGcgs=);
}

.starting {
    background: darkgreen;
}

.visited {
    background: darkblue;
}

.shortestPath {
    background: green;
}

.nbvisit {
    background: #D41822;
}

.ending {
    background: darkred;
}

@media (max-width: 763px) {
    #mainContainer {
        padding: 15px;
    }
    .col {
        margin: 5px;
        padding: 5px;
        margin: 0;
    }
}

.navbar {
    background: darkcyan;
    font-size: 16px;
    font-weight: bold;
}

a:hover {
    color: wheat;
}

a {
    color: rgb(206, 202, 194)
}

#icon_twitter, #icon_github {

    border: 1px solid black;
    border-radius: 50%;
    float: right;
    margin: 0px 4px;
}