1@media (dark-mode:true) { 2 .header { 3 width: 100%; 4 height: 60px; 5 font-size: 16px; 6 align-items: center; 7 justify-content: center; 8 } 9 10 .footer { 11 width: 100%; 12 height: 40px; 13 align-items: center; 14 } 15}