It is to fix tp-yt-paper-tooltip.yt-live-chat-text-message-renderer
/* ==UserStyle== @name Fix tp-yt-paper-tooltip.yt-live-chat-text-message-renderer @namespace github.com/openstyles/stylus @version 1.0.3 @description It is to fix tp-yt-paper-tooltip.yt-live-chat-text-message-renderer @author CY Fung @license MIT ==/UserStyle== */ @-moz-document url-prefix("https://www.youtube.com/live_chat") { /* Insert code here... */ tp-yt-paper-tooltip.style-scope.yt-live-chat-text-message-renderer[role="tooltip"], tp-yt-paper-tooltip.style-scope.yt-live-chat-author-badge-renderer[role="tooltip"] { border-radius: 4px; margin: 8px; text-transform: none; word-break: normal; font-family: "Roboto","Arial",sans-serif; font-size: 1.2rem; line-height: 1.8rem; font-weight: 400; background-color: var(--paper-tooltip-background, #616161); color: var(--paper-tooltip-text-color, white); padding: 8px; -webkit-font-smoothing: antialiased; outline: none; opacity: 0.8; transform:translate(0px, -10px); display: var(--mtooltip-display); } .yt-live-chat-item-list-renderer:not(:hover){ --mtooltip-display: none; } }