body {
    background: no-repeat 70% 30%/cover black url('/images/index/bg1k.jpg');
}

body > header.banner:hover,
body > header.banner:focus-within {
    color: #e4b63a;
}

main {
    position: relative;
}

a#next-concert {
    display: block;
    position: absolute;
    bottom: 0;
    left: -2em;
    padding: 2em;
    width: 6em;
    height: 3em;
    text-align: center;
    text-decoration: none;
    background: no-repeat center/contain url('/images/calendar.svg');
}
a#next-concert:hover, a#next-concert:focus {
    color: #e4b63a;
    background-image: url('/images/calendar-gold.svg');
}

#next-concert p {
    position: relative;
    top: 1em;
    margin: 0;
    text-transform: uppercase;
}

#next-concert #day {
    font-weight: 600;
}

@media (min-width: 1024px), (min-height: 600px) {
    body {
        background-image: url('/images/index/bg2k.jpg');
    }
}

@media (min-width: 2048), (min-height: 1300px) {
    body {
        background-image: url('/images/index/bg4k.jpg');
    }
}

@media (min-width: 4096px), (min-height: 2700px) {
    body {
        background-image: url('/images/index/bgmax.jpg');
    }
}

@media (max-aspect-ratio: 1/1) and (max-height: 600px),
       (max-aspect-ratio: 5/6) {
    body {
        background-image: url('/images/photos/PierreVaillant2.jpg');
        background-position: bottom;
    }

    main {
        display: flex;
        justify-content: center;
    }

    a#next-concert {
        bottom: auto;
        left: auto;
        top: 10%;
     }
}

@media (min-width: 50em) {
    header.menu > nav {
        background: #0004;
    }

    nav li.dropdown ul {
        background: #0004;
    }
}