.Floor {
    background: #44f;
}

.Wall {
    background: #006;
    box-shadow: inset 0 0 24px #003;
}

.FloorCorruption {
    background: #4a4;
}

.WallCorruption {
    background: #050;
    box-shadow: inset 0 0 24px #030;
}

.StairUp {
    background: #44f;
}

.StairUp:after {
    content: '<';
}

.StairDown {
    background: #44f;
}

.StairDown:after {
    content: '>';
}

.Floor {
    background: #44f;
}

.Wall {
    background: #006;
    box-shadow: inset 0 0 24px #003;
}

.FloorCorruption {
    background: #4a4;
    z-index: 1;
    box-shadow: 0 0 4px #0c0;
}

.WallCorruption {
    background: #050;
    box-shadow: inset 0 0 24px #030;
}

.StairUp {
    background: #44f;
}

.StairUp:after {
    content: '<';
}

.StairDown {
    background: #44f;
}

.StairDown:after {
    content: '>';
}

Add a glow to the floor.
Add a glow to the floor.
