body {
    color: #363636;
    font-family: sans-serif;
    font-weight: 400; /* regular */
}

#page {
    margin-top: 0;
    margin-bottom: 0;
}

.page-margin {
    max-width: 70rem;
    padding-left: 3rem;
    padding-right: 3rem;
    margin-left: auto;
    margin-right: auto;
}

@media (max-width: 768px) {
    .page-margin {
        /* Mobile */
        padding-left: 0.2rem;
        padding-right: 0.2rem;
        margin-left: auto;
        margin-right: auto;
    }
}

.mobile_only_block {
    display: none;
}

@media (max-width: 768px) {
    /* Mobile */
    .desktop_only {
        display: none;
    }
    .mobile_only_block {
        display: block;
    }
}


header {
    z-index: 1000;
    position: sticky;
    top: 0;
    background-color: #fff;
    border-bottom: 0.1rem solid #ddd;
    justify-content: space-between;
    align-items: center;
    /* Desktop */
    height: 8rem;
    display: flex;
}

@media (max-width: 768px) {
    /* Mobile */
    header {
        height: 5rem;
        display: block;
    }
}

* {
    /* Desktop */
    scroll-padding-top: 8.5rem;
}

@media (max-width: 768px) {
    /* Mobile */
    * {
        scroll-padding-top: 5.5rem;
    }
}

/* TODO: See if we can hide the header on scrolling down and show it on scroll up. */
header nav {
    width: 100%;
    vertical-align: center;
}

header .logo {
    height: 5rem;
}

header nav > img.mobilelogo {
    /* Desktop */
    display: none;
}

@media (max-width: 768px) {
    header nav > img.mobilelogo {
        /* Mobile */
        display: inline-block;
        height: 5rem;
        padding-top: 1rem;
        padding-left: 1rem;
    }
}

header nav ul {
    width: 100%;
    padding: 0;
    margin: 0;
    list-style: none;
    display: flex;
    justify-content: space-between;
    gap: 0.5rem;
    align-items: center;
}

@media (max-width: 768px) {
    header nav ul {
        /* Mobile */
        /* TODO: Make the menu scrollable. */
        z-index: 1100;
        background: #fff;
        flex-direction: column;
        justify-content: space-evenly;

        position: fixed;
        top: 0;
        left: 100%;
        width: 100%;
        height: 100vh;
        transition-duration: 0.5s;
        transition-timing-function: ease-in;
        transition-property: transform, opacity;
        pointer-events: none;
        opacity: 0;
    }

    header nav input:checked ~ ul {
        /* Mobile */
        pointer-events: auto;
        transform: translateX(-100%);
        opacity: 1;
    }
}

header nav li {
    vertical-align: center;
}

header nav a {
    text-decoration: none;
    color: #333;
    font-weight: 400;
    font-size: 1.6rem;
    transition: all 0.3s;
}

header nav a:hover,
header nav a:active,
header nav a.selected {
    color: #2563EB;
}

header nav a.selected {
    font-weight: 400;
    border-bottom: currentColor 0.2rem solid;
}

@media (max-width: 768px) {
    header nav a {
        font-size: 2rem;
    }
}

/* Hamburger Menu */
header nav > input,
header nav > img.button {
    display: none;
}

@media (max-width: 768px) {
    /* Mobile */
    header nav > input,
    header nav > img.button {
        display: block;
        position: absolute;
        top: 0;
        height: 5rem;
        padding-top: 0.5rem;
        padding-bottom: 0.5rem;
        right: 0;
        width: 4rem;
        padding-left: 0.5rem;
        padding-right: 1.5rem;
    }

    header nav input {
        z-index: 1300;
        opacity: 0;
        cursor: pointer;
    }

    header nav input:checked ~ img.hamburger {
        display: none;
    }

    header nav img.x {
        display: none;
    }

    header nav input:checked ~ img.x {
        display: block;
    }

    header nav img {
        z-index: 1200;
        color: #333;
    }
}

h1, h2 {
    margin-top: 1rem;
}

ol, ul {
    text-align: start;
}

form#order {
    border: #1e7e34 0.5rem solid;
    padding: 1rem;
}

form#order > div {
    margin-top: 0.5rem;
    margin-bottom: 0.5rem;
}

input#url {
    width: 100%;
}

footer {
    text-align: center;
    color: rgb(128, 128, 128);
    padding-bottom: 4rem;
}

.example-code {
    display: inline-block;
    vertical-align: top;
    /* Desktop */
    width: 60%;
}

@media (max-width: 768px) {
    .example-code {
        /* Mobile */
        width: 100%;
    }
}

.screenshot {
    /* Desktop */
    width: 35%;
}

@media (max-width: 768px) {
    .screenshot {
        /* Mobile */
        width: 95%;
    }
}