html {
    background-image: url('https://assetsio.gnwcdn.com/Leyendas-Pokemon-ZA_HKgfL7m.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    padding: 0;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    display: grid;
    grid-template-rows: auto 1fr auto;
    min-height: calc(100vh - 40px);
    margin: 0;
    gap: 18px;
    box-sizing: border-box;
    padding: 20px;
}

header {
    background-color: white;
    padding: 0;
    padding-left: 10px;
    padding-right: 10px;
    display: flex;
    align-items: center;
    border-radius: 15px;
}

header > img {
    width: 350px;
}

header > nav.nav-buttons {
    margin-left: auto;
}

nav.nav-buttons a {
    margin-right: 10px;
    padding: 5px 12px;
}

nav.nav-buttons a:not(:last-child) {
    margin-right: 10px;
}

header > nav.nav-buttons > a {
    padding: 5px;
    background-color: rgb(238, 21, 21);
    text-decoration: none;
    color: white;
    border-radius: 9px;

    border-style: solid;
    border-width: 1px;
    border-color: rgb(238, 21, 21);
    transition: 0.25s;
}

header > nav.nav-buttons > a.active {
    background-color: white;
    color: rgb(238, 21, 21);

    border-style: solid;
    border-width: 1px;
    border-color: black;
}

header > nav.nav-buttons > a:hover {
    background-color: black;
    color: white;

    border-style: solid;
    border-width: 1px;
    border-color: black;
    transition: 0.25s;
}

main {
    flex-wrap: wrap;
    flex: 1;
    background-color: rgb(255, 255, 255, 0.75);
    padding: 5px;
    border-radius: 15px;
}

main > * {
    padding-left: 20px;
    padding-right: 20px;
}

footer {
    /*background-color: white;
    padding: 10px;
    padding-left: 10px;
    padding-right: 0px;
    display: flex;
    flex-direction: column;
    border-radius: 9px;
    justify-content: center;
    text-align: center;
    width: 100%;*/

    background-color: white;
    padding: 10px;
    padding-left: 10px;
    padding-right: 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    border-radius: 15px;
}

.disclaimer {
    padding-top: 7px;
    font-size: 15px;
}

main hr.quiz {
    border-color: lightgray;
    size: 1;
    margin-left: 30px;
    margin-right: 30px;
}

main:not(.quiz) hr {
    border-color: lightgray;
    size: 1;
    margin-left: 12px;
    margin-right: 12px;
}

main a {
    color: crimson;
    text-decoration: none;
}

footer a {
    color: crimson;
    text-decoration: none;
}

footer a:hover {
    color: rgb(58, 58, 255);
    transition: 0.25s;
}

main a:hover {
    color: rgb(58, 58, 255);
    transition: 0.25s;
}

main li {
    margin-bottom: 3px;
}

main p {
    margin-bottom: 17px;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

body {
    opacity: 0;
}

body.loaded {
    opacity: 1;
    transition: opacity 0.2s ease-out;
    animation: fadeIn 0.2s ease-out forwards;
}

header { animation-delay: 0.1s; }
main { animation-delay: 0.3s; }
footer { animation-delay: 0.5s; }

@media (max-width: 600px) {
    header {
        flex-direction: column;
        padding: 15px;
        text-align: center;
    }

    header > img {
        width: 80%;
        margin-bottom: 15px;
    }

    header > nav.nav-buttons {
        margin-left: 0;
        display: flex;
        gap: 5px;
    }

    body {
        padding: 10px;
    }

    main > * {
        padding-left: 15px;
        padding-right: 15px;
    }
}