html, body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    font-family: Arial, Helvetica, sans-serif;
}

.background {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.buttons {
    display: flex;
    justify-content: center;
    gap: 30px;
    position: absolute;
}

.btn_gold img,
.btn_platinum img,
.btn_diamond img {
    width: 100%;
    min-width: 240px;
    height: auto;
}
/* Desktop (default) */

.background {
    content: url('images/background.webp');
}

.buttons {
    left: 50%;
    transform: translateX(-50%);
    bottom: 100px;
}

.buttons a{
    position: relative;
}

.h_gold {
    border-radius: 44px;
    background: rgba(209, 165, 90, 0.50);
    filter: blur(47px);
    width: 300px;
    position: absolute;
    height: 100px;
    left: 0;
    bottom: -25px;
    display: none;
    z-index: -1;
}

.h_platinum {
    border-radius: 44px;
    background: rgba(113, 113, 128, 0.50);
    filter: blur(47px);
    width: 300px;
    position: absolute;
    height: 100px;
    left: 0;
    bottom: -25px;
    display: none;
    z-index: -1;
}

.h_diamond {
    border-radius: 44px;
    background: rgba(1, 196, 89, 0.50);
    filter: blur(47px);
    width: 300px;
    position: absolute;
    height: 100px;
    left: 0;
    bottom: -25px;
    display: none;
    z-index: -1;
}

.title_notice{
    position: absolute;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 20px;
}



.box {
    display: grid;
    place-content: center;
    color: white;
    text-shadow: 0 1px 0 #000;
    --border-angle: 0turn;
    --main-bg: conic-gradient(from var(--border-angle), rgba(168, 239, 255, 1), rgba(168, 239, 255, 1) 5%, rgba(168, 239, 255, 1) 60%, rgba(168, 239, 255, 1) 95%);
    --main-bg: conic-gradient(from var(--border-angle), rgb(244 255 249), rgb(244 255 249) 5%, rgb(244 255 249) 60%, rgb(244 255 249) 95%);
    border: solid 3px transparent;
    border-radius: 44px;
    background: var(--main-bg) padding-box, var(--gradient-border) border-box, var(--main-bg) border-box;
    background-position: center center;
    animation: bg-spin 3s linear infinite;
}

.btn_gold{
    --gradient-border: conic-gradient(from var(--border-angle), transparent 25%, #7d5146, #fef1bd 99%, transparent);
}

.btn_platinum{
    --gradient-border: conic-gradient(from var(--border-angle), transparent 25%, #474763, #aaafc1 99%, transparent);
}

.btn_diamond{
    --gradient-border: conic-gradient(from var(--border-angle), transparent 25%, #11543a, #00c46a 99%, transparent);
}

@keyframes bg-spin {
    to {
        --border-angle: 1turn;
    }
}

@property --border-angle {
    syntax: "<angle>";
    inherits: true;
    initial-value: 0turn;
}