lama_cleaner/app/src/components/Header/ThemeChanger.scss

.theme-toggle-ui {
  z-index: 10;
  transition: all 0.2s ease-in;
  user-select: none;

  .theme-btn {
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    outline: none;

    svg {
      width: 22px;
      height: 22px;
    }
  }
}