discourse/app/assets/stylesheets/desktop/new-user.scss

.new-user-wrapper {
  .new-user-content-wrapper {
    // Grid layout
    width: 100%;
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
    grid-gap: 0;

    .user-navigation-secondary {
      grid-column-start: 1;
      grid-column-end: 3;
      grid-row-start: 1;
      grid-row-end: 2;

      display: flex;
      flex-direction: row;
    }

    .user-navigation-secondary ~ .user-content {
      grid-column-start: 1;
      grid-column-end: 3;
      grid-row-start: 2;
      grid-row-end: 3;
    }

    .user-content {
      padding: 0;
      margin-top: 2em;
      grid-column-start: 1;
      grid-column-end: 3;
      grid-row-start: 1;
      grid-row-end: 3;
    }

    .user-additional-controls {
      align-self: start;
      justify-self: start;
      grid-row-start: 2;
    }
  }

  .user-nav-dropdown-list-item {
    position: relative;
  }

  .user-nav-dropdown-submenu-wrapper {
    position: absolute;
    top: 2em;
    min-width: 10em;
    padding: 0;
    box-shadow: shadow("dropdown");
    z-index: z("dropdown");
  }
}