h1 {
    display: none;
}

main {
    article {
        width: 100%;
        margin-bottom: var(--spacing-2);
    }
}

@media screen and (min-width: 901px) and (max-width: 1239px) {
    main {
        display: grid;
        grid-template-columns: 300px 1fr;
        grid-template-areas: "left feed";
        grid-gap: var(--spacing-4);
        position: relative;
    }

    aside.right {
        grid-area: left;
        position: relative;
    }

    aside.left {
        max-width: 300px;
        overflow: hidden;
        position: absolute;
        top: var(--ic-height, 1230px);
        left: 0;
        width: 100%;
        margin-top: var(--spacing-4);
    }
}

@media only screen and (min-width: 1240px) {
    main {
        display: grid;
        grid-template-columns: 300px 1fr 300px;
        grid-template-areas: "left feed right";
        grid-gap: 1rem;
    }

    aside.left {
        grid-area: left;
    }

    aside.right {
        grid-area: right;
    }
}

page-ui[viewport="mobile"] {
    display: block;
}

#main-tabs {
    display: block;
    position: fixed;
    z-index: 2;
    top: 0;
    right: 0;
    left: 0;
    margin: 0;
}

[data-viewport="menubar"] {
    #main-tabs {
        left: 70px;
    }

    &[data-menu-appearance="full"] {
        #main-tabs {
            left: 260px;
        }
    }
}