* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: white;
    color: black;
    font-family: Arial, Helvetica, sans-serif;
}

.sidebar {
    position: fixed;
    top: 0;
    left: 0;

    width: 390px;
    height: 100vh;

    padding: 80px 45px 80px 80px;

    overflow-y: auto;
    background: white;
}

.navigation {
    width: 100%;
}

/* ===== SITE TITLE ===== */

.site-title {

    display:block;

    margin-bottom:42px;

    font-size:52px;
    font-weight:700;
    line-height:.95;

    color:black;

    text-decoration:none !important;

    letter-spacing:-0.04em;

}

.site-title:hover{

    opacity:.55;

}

/* ====================== */

.intro-links {
    margin-bottom: 42px;
}

.navigation-group {
    margin-bottom: 42px;
}

.navigation h2 {
    margin: 0 0 7px 0;

    font-size: 26px;
    line-height: 1.1;
    font-weight: 700;
}

.navigation a {
    display: block;

    width: fit-content;
    max-width: 100%;

    margin: 3px 0;

    color: black;

    font-size: 25px;
    line-height: 1.2;

    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 2px;
}

.navigation a:hover {
    opacity: 0.5;
}

.navigation a.active {
    font-weight: 700;
}

/* Don't underline the title */

.site-title,
.site-title:hover,
.site-title:visited{

    text-decoration:none;

}

.main-content {
    margin-left: 390px;

    min-height: 100vh;
    max-width: 1050px;

    padding: 80px 80px 120px 60px;

    font-size: 20px;
    line-height: 1.5;
}

.main-content h1 {
    margin-top: 0;

    font-size: 48px;
    line-height: 1.05;
}

.main-content h2 {
    margin-top: 45px;

    font-size: 30px;
}

.main-content img,
.main-content video {
    display: block;

    max-width: 100%;
    height: auto;

    margin: 30px 0;
}

@media screen and (max-width: 850px) {

    .sidebar {
        position: relative;

        width: 100%;
        height: auto;

        padding: 40px 30px;

        border-bottom: 2px solid black;
    }

    .main-content {
        margin-left: 0;

        width: 100%;
        padding: 40px 30px 80px;
    }

    .navigation h2 {
        font-size: 23px;
    }

    .navigation a {
        font-size: 22px;
    }

    .main-content h1 {
        font-size: 38px;
    }

    .site-title{
        font-size:42px;
    }

}