* {
    box-sizing: border-box;
}

@media screen and (width > 8in) and (max-width: 20in) {
    body {
        display: grid;
        grid-template-columns: 65fr 35fr;
        grid-gap: 1em;
    }

    #header {
        /* Place it in the parent element */
        grid-column-start: 1;
        grid-column-end: 3;

        /* Define layout for the children elements */
        display: grid;
        grid-template-columns: 8fr 2fr;
    }

    #header #header-text {
        /* Place it in the parent element */
        grid-column-start: 1;
        grid-column-end: 2;

        /* Content styling */
        padding-left: 1em;
    }

    #header #header-nav {
        /* Place it in the parent element */
        grid-column-start: 2;
        grid-column-end: 3;
    }

    #main {
        /* Place it in the parent element */
        grid-column-start: 1;
        grid-column-end: 3;

        /* Define layout for the children elements */
        display: grid;
        grid-template-columns: 7fr 3fr;
        grid-gap: 5px;
    }

    #main #breadcrumbs {
        grid-column-start: 1;
        grid-column-end: 3;
        padding: 0 3px;
    }

    #main #main-content {
        /* Place it in the parent element */
        grid-column-start: 1;
        grid-column-end: 2;
        grid-gap: 5px;

        /* Define layout for the children elements */
        max-width: 70%;
    }

    #main #sidebar-content {
        grid-column-start: 2;
        grid-column-end: 3;
    }
}