body {
    padding: 0;
    margin: 0;

    font-family: Barlow, sans-serif;
}

header {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 100px;
    align-items: center;

    margin: 0;
    padding: 0 20px;

    background-color: #1d2d3d;
    color: white;

    border-bottom: thin solid #597ea3;
}

header h1 {
    padding: 0;
    margin: 0;

    font-family: "Barlow Condensed", sans-serif;
    font-weight: 500;
    font-size: 60px;
    color: white;

    justify-self: left;
    white-space: nowrap;
}

header menu {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    align-items: center;
    justify-items: center;

    align-self: center;

    list-style-type: none;
    margin: 0;
    padding: 0;
}

menu a:link, menu a:visited, menu a:active {
    text-decoration: none;
    font-family: "Barlow Condensed", sans-serif;
    font-weight: 400;
    font-size: 30px;
    color: white;
}

header .splash {
    margin: 0;
    padding: 200px 20px;

    display: grid;
    grid-template-columns: auto;
    align-items: center;
    justify-items: center;

    font-size: 70px;
    text-align: center;
}

.separator {
    box-sizing: border-box;
    margin: 0;
    padding: 200px 20px;

    width: 100%;

    display: grid;
    grid-template-columns: auto;
    align-items: center;
    justify-items: center;
    text-align: center;

    font-size: 70px;

    background-color: #1d2d3d;
    color: white;
}


main > section {
    display: grid;
    grid-template-columns: auto;
    grid-template-rows: auto;
    align-items: center;
    justify-items: center;

    padding-bottom: 50px;
}
main > section .cards {
    display: grid;
    align-items: top;
    justify-items: center;
}
main > section > h1 {
    color: #597ea3;
    text-transform: uppercase;
    font-family: "Barlow Condensed", sans-serif;
    font-size: 36px;
    text-align: center;
    font-weight: 400;
    padding: 20px;
}

main > section article.card {
    box-sizing: border-box;
    width: 750px;
    padding: 50px;
    margin: 0;

    font: Barlow, serif;
    font-weight: medium;
    font-size: 24px;
}
main > section article.card ul li {
    padding: 20px 0;
}

main > section article.card h2 {
    font-family: "Barlow Condensed", sans-serif;
    font-weight: 600;
    font-size: 70px;

    padding-bottom: 17px;
    margin: 0;

    border-bottom: thin solid #b5d9fd;
}
main > section article .migration .platform {
    font-weight: 500;
    font-size: 36px;
}

main > section details.sources {
    display: none;
    padding: 50px;
    margin: 0 auto;

    font-family: Barlow, sans-serif;
    font-weight: 400;
    font-size: 24px;
}

main > section details.sources summary {
    text-align: center;

    font-size: 30px;
}

main > section#alternatives article.card h2 {
    border-bottom: none;
}

main > section#alternatives article.card .replaces {
    font-family: "Barlow Condensed", sans-serif;
    font-weight: 300;
    font-size: 36px;
    color: #597ea3;

    padding-bottom: 17px;
    margin: 0;

    border-bottom: thin solid #b5d9fd;
}

main > section#alternatives ul {
    height: 400px;
}

main > section#alternatives .alternative {
    display: grid;
    grid-template-columns: 3fr 1fr 1fr 1fr;
    align-items: center;
    justify-items: left;

    padding-top: 17px;
    border-top: thin solid #b5d9fd;
}


@media ( 2250px <= width ) {
    menu.full {
        display: grid;
    }
    menu.compressed {
        display: none;
    }

    main > section .cards {
        grid-template-columns: 750px 750px 750px;
    }
}

@media ( 1500px <= width < 2250px ) {
    header {
        grid-template-columns: 1fr 2fr;
    }
    menu.full {
        display: grid;
    }
    menu.compressed {
        display: none;
    }

    main > section .cards {
        grid-template-columns: 750px 750px;
    }
}
@media ( width < 1500px) {
    header {
        grid-template-columns: 1fr 3fr;
    }
    menu.full {
        display: none;
    }
    menu.compressed {
        display: grid;
    }

    main > section .cards {
        grid-template-columns: 750px;
    }
}

@media ( width < 1000px ) {
    header {
        grid-template-columns: auto;
        grid-template-rows: 100px 100px;
    }
    header h1 {
        text-align: center;
        justify-self: center;
        align-self: center;
    }

}