style.css

/*
#voice-search-button {
    display: none !important;
}
*/
#comments {
    /*
    min-height: 360px;
    height: calc(100vh - var(--ytd-watch-flexy-masthead-height) - var(--ytd-margin-6x) - var(--ytd-watch-flexy-space-below-player));
    max-height: 700px;
    */
    min-height: 0;
    max-height: var(--ytd-watch-flexy-panel-max-height);
    overflow-y: scroll;
    border: 1px solid var(--yt-sys-color-baseline--outline);
    border-radius: 12px;
    padding: 0px 15px;
    margin-bottom: 15px;
}


body.byui-related-view #related ytd-item-section-renderer>#contents {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    grid-auto-flow: dense;
    grid-gap: 16px;
}

body.byui-related-view #related ytd-item-section-renderer>#contents ytd-reel-shelf-renderer {
    grid-column: 1 / -1;
}

body.byui-related-view #related ytd-item-section-renderer>#contents .ytLockupViewModelHorizontal {
    flex-direction: column;
    margin-top: 0;
}

body.byui-related-view #related ytd-item-section-renderer>#contents a.ytLockupViewModelContentImage {
    width: auto !important;
    padding-bottom: 6px;
}


/*전체화면 댓글창*/

.byui-fullscreen-comment {
    border: none;
    border-radius: 0px !important;
    background-color: rgba(0, 0, 0, 0.7);
    min-height: 100% !important;
    min-width: 20% !important;
    width: 20%;
    height: 100%;
    position: relative;
    z-index: 11;
    overflow: hidden;
    float: right;
}

/*댓글 헤더 레이아웃 변경*/
.byui-fullscreen-comment ytd-comments-header-renderer {
    margin-bottom: 0;
}

.byui-fullscreen-comment ytd-comments-header-renderer #title {
    display: block;
}

.byui-fullscreen-comment ytd-comments-header-renderer #title span {
    color: rgb(245, 245, 245);
}

.byui-fullscreen-comment ytd-comments-header-renderer #title #leading-section {
    margin-bottom: 15px;
}

/*고정 댓글*/
.byui-fullscreen-comment .ytd-pinned-comment-badge-renderer {
    color: rgb(200, 200, 200) !important;
}

/*댓글 작성자*/
.byui-fullscreen-comment #author-text span {
    color: rgb(245, 245, 245);
}

/*댓글 내용*/
.byui-fullscreen-comment yt-attributed-string,
.byui-fullscreen-comment yt-attributed-string * {
    color: rgb(245, 245, 245) !important;
}

/*댓글 작성 시간*/
.byui-fullscreen-comment #published-time-text a {
    color: rgb(200, 200, 200) !important;
}

/*댓글 내 링크*/
.byui-fullscreen-comment .yt-core-attributed-string__link {
    color: rgb(200, 200, 255) !important;
}

/* 댓글 창 내 아이콘 하얗게 */
.byui-fullscreen-comment svg {
    filter: brightness(100);
}

/* 좋아요/싫어요 아이콘 하얗게 */
.byui-fullscreen-comment #vote-count-middle {
    filter: brightness(100);
}

/*정렬 기준*/
.byui-fullscreen-comment #label #icon-label {
    color: rgb(245, 245, 245);
}

/*자세히보기/간략히*/
.byui-fullscreen-comment #more span,
.byui-fullscreen-comment #less span {
    color: rgb(180, 180, 180);
}

/*답글 작성 차단*/
.byui-fullscreen-comment #simple-box,
.byui-fullscreen-comment #reply-button-end {
    display: none;
}

/*답글 더보기*/
.byui-fullscreen-comment .ytd-comment-replies-renderer span,
.byui-fullscreen-comment .ytd-comment-replies-renderer span,
.byui-fullscreen-comment .ytd-continuation-item-renderer span {
    color: white !important;
}

.byui-fullscreen-comment .ytd-comment-replies-renderer button:hover,
.byui-fullscreen-comment .ytd-comment-replies-renderer button:hover,
.byui-fullscreen-comment .ytd-continuation-item-renderer button:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* 댓글 번역하기 */
.byui-fullscreen-comment .translate-button * {
    color: rgb(140, 140, 140) !important;
}


.byui-fullscreen-live-chat {
    border: none;
    border-radius: 0px !important;
    min-height: 100% !important;
    min-width: 20% !important;
    width: 20%;
    height: 100%;
    position: relative;
    z-index: 12;
    float: right;
}


ytd-app[fullscreen] {
    overflow: auto !important;
}

ytd-app[scrolling] {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    right: calc((var(--ytd-app-fullerscreen-scrollbar-width) + 1px)*-1) !important;
    bottom: 0 !important;
    overflow-x: auto !important;
}

ytd-watch-flexy[fullscreen] #single-column-container.ytd-watch-flexy,
ytd-watch-flexy[fullscreen] #columns.ytd-watch-flexy {
    display: flex !important;
}

/* Hide the fullscreen grid with recommended videos */
.ytp-fullscreen-grid,
.ytp-fullscreen-grid-main-content,
.ytp-fullscreen-grid-stills-container,
.ytp-modern-videowall-still,
.ytp-fullscreen-grid-expand-button,
.ytp-fullscreen-grid-hover-overlay {
    display: none !important;
    opacity: 0 !important;
    visibility: hidden !important;
    /*pointer-events: none !important;*/
    height: 0 !important;
    max-height: 0 !important;
    overflow: hidden !important;
}

/* Completely disable grid scrolling CSS variables */
.html5-video-player.ytp-grid-scrollable,
.html5-video-player {
    --ytp-grid-scroll-percentage: 0 !important;
    --ytp-grid-peek-height: 0px !important;
}

/* Hide any fullscreen education panels and overlays */
.ytp-fullerscreen-edu-panel,
.ytp-cards-teaser,
.ytp-cards-teaser-box,
div[class*="fullerscreen"] {
    display: none !important;
    opacity: 0 !important;
    visibility: hidden !important;
}

.ytp-delhi-modern.ytp-full-bleed-player.ytp-fullscreen-grid-active:not(.html5-video-player.ended-mode) .ytp-chrome-bottom {
    bottom: 0 !important;
    opacity: 1 !important;
}

.ytp-fullscreen-grid-peeking.ytp-full-bleed-player.ytp-delhi-modern:not(.ytp-autohide) .ytp-chrome-bottom,
.ytp-fullscreen-grid-peeking.ytp-full-bleed-player.ytp-delhi-modern.ytp-autohide.ytp-grid-scrolling .ytp-chrome-bottom {
    opacity: 1 !important;
}

.ytp-fullscreen-grid-peeking.ytp-full-bleed-player.ytp-delhi-modern .ytp-chrome-bottom {
    bottom: 0 !important;
}

.ytp-fullscreen-grid-peeking.ytp-full-bleed-player.ytp-grid-scrolling .ytp-chrome-bottom {
    pointer-events: auto !important;
}

.ytp-delhi-modern.ytp-fullscreen-grid-active:not(.html5-video-player.ended-mode):not(.ytp-grid-scrolling) .ytp-chrome-bottom {
    display: auto !important;
    bottom: 0 !important;
}