@media only screen and (orientation: portrait) and (max-width: 600px) {
  #header,
  #footer,
  .section  {
    padding: 1em;
  }

  .panel11,
  .panel12,
  .panel21 {
    grid-template-columns: 1fr;
  }

  .icon {
    width: 30px;
  }

  .tiles {
    grid-template-columns: 1fr;
  }

  .gallery {
    grid-template-columns: 1fr 1fr;
    margin-left: -1em;
    margin-right: -1em;
    padding: 0 1em 0 1em;
  }

  .gallery > img {
    width: 100%
  }

  /* theme specific */

  .linktree {
    grid-template-columns: auto;
    gap: 1em;
  }

  .linktree > .vline {
    display: none;
  }

  #nav_frame.navbar_dropdown body {
    overflow-y: hidden;
  }
  
  .nav_dropdown {
    position: relative;
  }
  
  .nav_categories,
  .nav_spacer {
    display: none;
  }

  #nav_logo,
  #nav_logo_small {
    margin: 10px auto;
  }

  #nav_logo_small,
  #nav_burger,
  #nav_dropBtn,
  #nav_account_m  {
    display: block;
  }

  #nav_logo {
    display: none;
  }

  #nav_frame.navbar_dropdown {
    height: 100vh;
    background-color: rgb(29, 29, 29);
    overflow: scroll;
  }

  #nav_frame.navbar_dropdown .nav_categories {
    display: grid;
  }

  #navbar {
    grid-template-columns: auto 1fr auto;
    gap: 2em;
  }

  .nav_categories {
    text-align: center;
    gap: 2em;
    grid-column: span 3;
  }

  .nav_category > a {
    background-color: rgba(255, 255, 255, 0.2);
    padding: 0.5em;
    border-radius: 10px;
    padding: 18px;
    width: auto;
    border-bottom-right-radius: 0;
    border-bottom-left-radius: 0;
  }

  .nav_dropdown {
    display: grid;
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 10px;
  }

  .nav_links > a {
    padding: 18px;
  }

  .nav_links {
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 0;
  }

  #bar_prices {
    grid-template-columns: 1fr;
  }

  .attendees {
    grid-template-columns: 1fr;
    gap: 0.5em;
  }

  #userPanel {
    margin-bottom: 2em;
  }

  #nav_login,
  #nav_loggedIn {
    position: static;
    width: auto;
  }

  #titel {
    height: 12vh;
    margin-bottom: -4vh;
  }

  #subtext {
    width: 50vw;
  }
}