.background { flex-grow: 1; } .header { align-items: center; } .header__label { font-size: 18px; color: rgb(255, 255, 255); } .drop-area { } .drop-area--dropping { opacity: 0.4; background-color: rgb(0, 100, 0); } .drop-area__label { -unity-font-style: italic; color: rgb(255, 255, 255); }