styles.css

/* this will get overwritten on load */
body {
  display: none;
}

html, body {
  height: 100vh;
}

.home-container {
  display: flex;
  flex-direction: column;
  gap: 24px;
  align-items: center;
  justify-content: center;
  height: 100%;
}

.search-input {
  padding: 8px;
  min-width: 250px;
  border-top-left-radius: 2px;
  border-bottom-left-radius: 2px;
}

.search-btn {
  border: none;
  height: 40px;
  cursor: pointer;
  border-top-right-radius: 2px;
  border-bottom-right-radius: 2px;
  padding: 0 16px;
  transition: background 100ms ease-in-out;
}

.search-icon-container {
  height: 24px;
  width: 24px;
}

@media (prefers-color-scheme: dark) {
  .logo {
    color: white;
    fill: white;
  }

  .search-input {
    border: 1px solid rgb(48, 48, 48);
    background: rgb(18, 18, 18);
    color: white;
  }

  .search-btn {
    background: rgba(255, 255, 255, 0.08);
  }

  .search-icon-container {
    color: white;
    fill: white;
  }
}

@media (prefers-color-scheme: light) {
  .search-input {
    border: 1px solid rgb(204, 204, 204);
  }

  .search-btn {
    background: rgb(248, 248, 248);
    border: 1px solid rgb(211, 211, 211);
    border-left: none;
  }

  .search-btn:hover {
    background: rgb(240, 240, 240);
    border: 1px solid rgb(198, 198, 198);
    border-left: none;
  }
}

.logo {
  width: 200px;
}

.search-input:focus {
  outline: none;
  border: 1px solid rgb(28, 98, 185);
}

.search-group {
  height: 40px;
  display: flex;
}

#columns {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

#columns #secondary {
  display: none;
}

#columns #primary {
  max-width: fit-content;
}

#top-level-buttons-computed,
#voice-search-button,
ytd-mini-guide-renderer,
#related,
tp-yt-app-drawer,
.ytd-masthead #buttons,
#guide-button,
[class="style-scope ytd-comments"] {
  display: none !important;
}

#page-manager {
  margin-left: 0 !important;
}

.ytp-chrome-bottom {
  width: calc(98%) !important;
}

ytd-app[mini-guide-visible] ytd-page-manager.ytd-app {
  margin-left: 0 !important;
}

ytd-watch-flexy:not([theatre]):not([fullscreen]) .html5-video-container,
ytd-watch-flexy:not([theatre]):not([fullscreen]) video {
  width: 100% !important;
  height: 100% !important;
  left: 0 !important;
}