.everything,
.container {
    background-color: rgb(180, 180, 180);
}

.sidebar {
    background-color: rgb(110, 110, 110);
}

.dropdown-container-parent {
    background-color: rgb(140, 140, 140);
}

.dropdown-container-child {
    background-color: rgb(170, 170, 170);
}

.dropdown-btn-parent,
.dropdown-btn-child,
.sidebar a {
    color: black;
}