.block-editor-inserter__main-area,
.block-editor-inserter__quick-inserter {
    width: 450px !important;
}

h4.preview {
    float: none;
    color: #999eee;
}

html :where(.wp-block) {
    max-width: 920px;
}

@media (min-width: 782px) {
    /* Target the right-hand sidebar in Gutenberg editor */
    .interface-complementary-area__fill,
    .interface-complementary-area {
        width: 500px !important;
    }
}