overleaf/services/web/frontend/stylesheets/modules/writefull.scss

.writefull-loading-bar {
  font-size: var(--font-size-02);
  height: 40px;
  justify-content: center;
}

.writefull-error-notification {
  margin: 48px 64px;
  width: 100%;
  max-width: 520px;
  text-align: left;
}

.feature-rebrand-promo-container {
  z-index: 12;
  position: absolute;
  bottom: 15px;
  right: 15px;
  background: $bg-dark-primary;
  color: $content-primary-dark;
  max-width: 450px;
}

.feature-rebrand-promo-title-container {
  display: flex;
  justify-content: space-between;
}

.feature-rebrand-promo-title-text {
  color: white;
  font-size: 14px;
}

.feature-rebrand-promo-body {
  color: white;
}