Smaller youtube thumbnails stylus css

#contents.ytd-rich-grid-renderer {
    --ytd-rich-grid-items-per-row: 1;
}
/* Small devices (portrait tablets and large phones, 600px and up) */
@media only screen and (min-width: 600px) {
    #contents.ytd-rich-grid-renderer {
        --ytd-rich-grid-items-per-row: 2;
    }
}

/* Medium devices (landscape tablets, 768px and up) */
@media only screen and (min-width: 768px) {
    #contents.ytd-rich-grid-renderer {
        --ytd-rich-grid-items-per-row: 3;
    }
}

/* Large devices (laptops/desktops, 992px and up) */
@media only screen and (min-width: 992px) {
    #contents.ytd-rich-grid-renderer {
        --ytd-rich-grid-items-per-row: 4;
    }
}

/* Extra large devices (large laptops and desktops, 1200px and up) */
@media only screen and (min-width: 1200px) {
    #contents.ytd-rich-grid-renderer {
        --ytd-rich-grid-items-per-row: 5;
    }
}

/* Extra extra large devices (large laptops and desktops, 1800px and up) */
@media only screen and (min-width: 1800px) {
    #contents.ytd-rich-grid-renderer {
        --ytd-rich-grid-items-per-row: 6;
    }
}