.bg-shell-sun {
    background-color: #F9FF91;
}
.bg-shell-water {
    background-color: #B1E2FC;
}
.bg-shell-air {
    background-color: #F3D6FF;
}
.bg-shell-earth {
    background-color: #9EFFC0;
}

.h-melting-point {
    background-color: #FAFFFF;
}
.h-boiling-point {
    background-color: #FAF0F0;
}
.bg-divider-chemistry-sorts {
    background-image: url("../media/images/chemistry/sorts.svg");
    background-repeat: no-repeat;
    background-size: 100% 100%;
}