Unrounded YouTube by lightbeam

/* ==UserStyle==
@name           Unrounded YouTube
@namespace      youtube
@version        1.1.0
@description    Undo YouTube's new rounded corners
@author         lightbeam
@preprocessor   stylus
@var checkbox pfp "Unround pfps" 0
==/UserStyle== */

@-moz-document domain("youtube.com") {
ytd-multi-page-menu-renderer[sheets-refresh] {
  border-radius: 0 !important;
}
ytd-menu-popup-renderer[sheets-refresh] {
  border-radius: 0 !important;
}
ytd-thumbnail[size="large"] a.ytd-thumbnail, ytd-thumbnail[size="large"]::before {
  border-radius: 0 !important;
}
ytd-thumbnail[size="medium"] a.ytd-thumbnail, ytd-thumbnail[size="medium"]::before {
  border-radius: 0 !important;
}
tp-yt-paper-dialog[modern] {
  border-radius: 0 !important;
}
yt-bubble-hint-renderer[rounded-container] {
  border-radius: 0 !important;
}
ytd-playlist-thumbnail[size="medium"] a.ytd-playlist-thumbnail, ytd-playlist-thumbnail[size="medium"]::before {
  border-radius: 0 !important;
}
ytd-playlist-thumbnail[size="large"] a.ytd-playlist-thumbnail, ytd-playlist-thumbnail[size="large"]::before {
  border-radius: 0 !important;
}
ytd-playlist-panel-renderer[modern-panels]:not([within-miniplayer]) #container.ytd-playlist-panel-renderer {
  border-radius: 0 !important;
}
ytd-miniplayer[rounded-container] #player-container.ytd-miniplayer, ytd-miniplayer[rounded-container] #video-container.ytd-miniplayer .video.ytd-miniplayer, ytd-miniplayer[rounded-container] #card.ytd-miniplayer, ytd-miniplayer[rounded-container] {
  border-radius: 0 !important;
}
.ytp-settings-menu.ytp-rounded-menu, .ytp-screen-mode-menu.ytp-rounded-menu {
  border-radius: 2px !important;
}
/* searchbar */
#container.ytd-searchbox {
  background-color: var(--ytd-searchbox-background) !important;
  border: 1px solid var(--ytd-searchbox-legacy-border-color) !important;
  border-radius: 2px 0 0 2px !important;
  box-shadow: inset 0 1px 2px var(--ytd-searchbox-legacy-border-shadow-color) !important;
  color: var(--ytd-searchbox-text-color) !important;
  padding: 2px 6px !important;
}
ytd-searchbox[desktop-searchbar-style="rounded_corner_borders_light_btn"] #search-icon-legacy.ytd-searchbox, ytd-searchbox[desktop-searchbar-style="rounded_corner_autofocus"] #search-icon-legacy.ytd-searchbox {
  border-radius: 0;
}
ytd-searchbox[desktop-searchbar-style="rounded_corner_dark_btn"] #searchbox-button.ytd-searchbox {
  display: none !important;
}
ytd-searchbox[desktop-searchbar-style="rounded_corner_light_btn"] #searchbox-button.ytd-searchbox {
  display: none !important;
}
#search[has-focus] #search-input {
  margin-left: 40px;
}
#search-icon-legacy.ytd-searchbox {
  display: block !important;
}
.sbsb_a {
  border-radius: 0 !important;
  margin-top: -4px;
}
/* ads */
ytd-image-companion-renderer[rounded] img.ytd-image-companion-renderer {
  border-radius: 0 !important; 
}
/* sub button */
.yt-spec-button-shape-next--mono.yt-spec-button-shape-next--filled {
  color: #fff;
  background: #c00;
  border-radius: 0 !important;
}
.yt-spec-button-shape-next--mono.yt-spec-button-shape-next--tonal {
  background: var(--yt-spec-badge-chip-background);
  border-radius: 0 !important;
}
/* end screens */
.ytp-ce-video.ytp-ce-large-round, .ytp-ce-playlist.ytp-ce-large-round, .ytp-ce-large-round .ytp-ce-expanding-overlay-background {
  border-radius: 0;
}
/* blue buttons */
.yt-spec-button-shape-next--size-m {
  border-radius: 0;
}
/* description thing */
ytd-watch-metadata[modern-metapanel] #description.ytd-watch-metadata {
  border-radius: 0;
}
/* sidebar */
ytd-guide-entry-renderer[guide-refresh] tp-yt-paper-item.ytd-guide-entry-renderer {
  --paper-item-focused-before-border-radius: 0;
}
ytd-guide-entry-renderer[guide-refresh] {
  border-radius: 0 !important;
}
.style-scope.ytd-guide-entry-renderer:hover {
  border-radius: 0 !important;
}
/* playlist */
.immersive-header-container.ytd-playlist-header-renderer {
  border-radius: 0;
}
if pfp {
    yt-img-shadow.ytd-topbar-menu-button-renderer, yt-img-shadow.ytd-guide-entry-renderer, #avatar, #author-thumbnail, 
    #author-thumbnail.ytd-comment-renderer yt-img-shadow.ytd-comment-renderer, 
    ytd-comment-replies-renderer #creator-thumbnail.ytd-comment-replies-renderer yt-img-shadow.ytd-comment-replies-renderer, #hearted-thumbnail.ytd-creator-heart-renderer, 
    yt-img-shadow.ytd-channel-renderer, yt-img-shadow.ytd-video-renderer, yt-img-shadow.ytd-channel-avatar-editor, 
    #author-thumbnail.ytd-backstage-post-renderer yt-img-shadow.ytd-backstage-post-renderer, #thumbnail.ytd-profile-column-user-info-renderer,
    yt-img-shadow.ytd-account-item-renderer {
        border-radius: 0 !important;
    }
}
}