body {
    background-color:beige;
}
td {
    width:30px;
    height:30px;
    background-color:azure;
}
.wall {
    background-color:gray;
}
.player {
    background-color:green;
}
.goal {
    background-color:red;
}
td:hover {
    cursor:pointer;
}
#dev {
    font-size:10px;
    color:red;
}