Compact Youtube UI v9

! Grid layout
youtube.com##ytd-rich-item-renderer.ytd-rich-grid-renderer:style(--thumbnail-width: 264px; flex: 1 0 var(--thumbnail-width) !important; max-width:calc(1.5 * var(--thumbnail-width)) !important;)
youtube.com##ytd-rich-grid-renderer:style(--ytd-rich-grid-gutter-margin: 0px !important; --ytd-rich-grid-row-margin: 24px !important;)
youtube.com###contents.ytd-rich-grid-renderer:style(--ytd-rich-grid-item-margin: 11px !important; padding-top:12px !important; width: calc(100% - 10px) !important;)
youtube.com##ytd-shelf-renderer.ytd-rich-section-renderer .grid-subheader:style(margin-top: 0px !important;)
youtube.com##ytd-feed-filter-chip-bar-renderer.ytd-rich-grid-renderer:style(margin-bottom: 4px !important;)
youtube.com##chip-bar-view-model.ytd-rich-grid-renderer.chip-bar:style(padding-bottom: 12px !important;)

! Item layout
youtube.com###avatar-container:not([hidden]).ytd-rich-grid-media:style(margin-right: -36px !important;)
youtube.com###avatar-container:not([hidden]) + #meta > h3.ytd-rich-grid-media:style(padding-left: 44px !important;)
youtube.com###meta.ytd-rich-grid-media:style(padding-right:22px !important;)
youtube.com##ytd-video-meta-block.ytd-rich-grid-media:style(margin-right: -22px !important;)
youtube.com###details.ytd-rich-grid-media:style(margin: -4px 0 -4px 0 !important;)
youtube.com##ytd-badge-supported-renderer.video-badge.ytd-rich-grid-media:style(position: absolute !important; right: 0 !important; margin-top: -19px !important;)

! Font sizes and alignment
youtube.com###video-title.ytd-rich-grid-media:style(font-size: 1.5rem !important; line-height:1.8rem !important; align-content: center !important; word-break: break-word !important;)
youtube.com###avatar-container:not([hidden]) + #meta #video-title.ytd-rich-grid-media:style(height: 3.6rem !important;)
youtube.com##span.inline-metadata-item.ytd-video-meta-block:style(font-size: 1.24rem !important;)
youtube.com##a.yt-formatted-string:style(white-space: wrap !important;)
youtube.com##span.yt-content-metadata-view-model-wiz__metadata-text:style(white-space: wrap !important;)
youtube.com##span.yt-content-metadata-view-model-wiz__metadata-text[role="text"]:style(font-size: 1.34rem !important; line-height: 1.8rem !important;)
youtube.com##a.yt-lockup-metadata-view-model-wiz__title:style(font-size: 1.5rem !important; line-height: 1.8rem !important;)
youtube.com##a.yt-lockup-view-model-wiz__content-image:style(padding-bottom: 8px !important;)

! Unpin the categories on the "home" feed (remove these lines if you want them pinned)
youtube.com###chips-wrapper.ytd-feed-filter-chip-bar-renderer:style(position: relative !important; top: 0 !important; z-index:0 !important;)
youtube.com###frosted-glass.ytd-app:style(height:56px !important;)

! Uncomment this to remove shorts
! youtube.com##ytd-rich-section-renderer:has(> * > [is-shorts])

! Uncomment this to remove posts
! youtube.com##ytd-rich-section-renderer:has(> * > * > * > #contents-container > * > :first-child[is-post])