style.css

@keyframes animate-bg {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: -75px 0;
    }
    
}

@keyframes animate-fade {
    0% {
        opacity: 0;
    }
    100% {
        opacity: 1;
    }
}

@keyframes animate-fade-out {
    0% {
        opacity: 1;
    }
    100% {
        opacity: 0;
    }
}

@keyframes animate-move {
    0% {
        opacity: 0;
        transform: translateY(25%);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

* {
    font-family: "Rowdies", sans-serif;
    font-weight: 400;
    font-style: normal;
    box-sizing: border-box;
}

body {
    margin: 0;
    background-color: var(--secondary);
    color: white;
}

:root {
    --primary: #2456ac;
    --secondary: #08204b;
}

#scanner-container {
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 20px;
    box-shadow: 0 0 30px 0 black, 0 0 200px 0 var(--primary);
    position: sticky;
    top: 13px;
    border: solid 2px #2456acd0;
    max-width: 400px;
    width: calc(100% - 26px);
    max-height: 40vh;
    z-index: 5;
}

#qr-shaded-region {
    border-color: #00000030 !important;
}

#qr-shaded-region * {
    opacity: 0;
}

/* Buttons */

button {
    display: inline-block;
    border: none;
    background-color: white;
    font-size: 1.5rem;
    color: var(--primary);
    padding: 8px 40px;
    border-radius: 50px;
    vertical-align: middle;
    border: solid transparent 3px;
    cursor: pointer;
    transition: border 0.2s;
}

button:hover, button:focus, button:active {
    border: solid var(--secondary) 3px;
    cursor: pointer;
}

/* Welcome Page */

#headphone-advice {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 25px;
    height: 100vh;
    width: 100%;
    position: absolute;
    top: 0;
    animation: animate-fade-out 1s forwards;
    animation-delay: 3s;
}

#headphone-advice > div {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    text-align: center;
}

#headphone {
    width: 50px;
    margin-bottom: 15px;
}

#p-welcome {
    height: 100vh;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-image: url("images/bg.png");
    background-repeat: repeat;
    background-size: 75px;
    animation: animate-bg 4s linear infinite;
}

#p-welcome main {
    background-color: #2456aca0;
    box-shadow: 0 0 100px 100px #2456aca0;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    animation: animate-fade 1s forwards;
    animation-delay: 4s;
}

#p-welcome button {
    opacity: 0;
    animation: animate-move 1.5s forwards;
    animation-delay: 0.7s;
}

#logo {
    width: 85%;
    max-width: 300px;
    margin-bottom: 35px;
}

#p-welcome footer {
    position: absolute;
    bottom: 35px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    margin-top: 35px;
    opacity: 0;
    animation: animate-fade 1s forwards;
    animation-delay: 4s;
}

#p-welcome footer span {
    font-size: 1.3rem;
}

#p-welcome footer aside {
    font-size: 0.75rem;
}

#p-main {
    min-height: 100vh;
    background-color: var(--secondary);
    flex-direction: column;
    align-items: center;
}

#pages {
    width: 100vw;
    height: 100vh;
    overflow-x: hidden;
}

.page {
    display: none !important;
    width: 100%;
}

.page.active {
    display: flex !important;
}

/* Stamps */

.stamp {
    display: flex;
    align-items: center;
}

.stamp > img {
    width: 50px;
    transform: rotate(10deg);
}

#stamp-view {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    height: 100vh;
    width: 100%;
    position: absolute;
    top: 0;
    z-index: 10;
    background-color: #08204b7d;
    backdrop-filter: blur(25px);
}