header {background-color: #24364D;}
header .logo {margin-top: 1.5rem; margin-bottom: 1.5rem;}
@media screen and (max-width: 40em) {
    header .logo {
        margin-top: 2rem; margin-bottom: 2rem;
    }
}
main {background-color: #f0f0f0;}
.content {background-color: white;}