#MobileHeader {
  display: none;
}

@media (max-width: 900px) {
  #ArtworkHelper,
  #Bodycontainer {
    min-width: 0;
    background-image: none !important;
  }

  #MobileHeader {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 6px 10px;
    background: #0b1f3a;
    border-bottom: 2px solid #5a2800;
    font-family: Verdana, Arial, sans-serif;
  }

  #MobileHeader img {
    height: 40px;
  }

  #MobileHeader .MobileOnline {
    color: #fff;
    font-size: 11px;
    text-decoration: none;
  }

  #MobileMenuButton {
    padding: 8px 12px;
    font-size: 14px;
    font-weight: bold;
    color: #fff;
    background: #5a2800;
    border: 1px solid #d4c0a1;
    border-radius: 4px;
  }

  #ContentRow {
    top: 0;
  }

  #MenuColumn {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 300;
    width: 190px;
    margin: 0;
    padding: 24px 0 20px 10px;
    overflow-y: auto;
    background: #0b1f3a;
    border-right: 2px solid #5a2800;
    box-shadow: 4px 0 12px rgba(0, 0, 0, 0.6);
    transform: translateX(-110%);
    transition: transform 0.25s ease;
  }

  body.MobileMenuOpen #MenuColumn {
    transform: translateX(0);
  }

  #MobileOverlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 250;
    background: rgba(0, 0, 0, 0.55);
  }

  body.MobileMenuOpen #MobileOverlay {
    display: block;
  }

  body.MobileMenuOpen {
    overflow: hidden;
  }

  #LeftArtwork,
  #ThemeboxesColumn {
    display: none;
  }

  #ContentColumn {
    margin: 8px 4px 0 4px;
  }

  #ContentColumn .NewsHeadlineAuthor {
    display: none;
  }

  #ContentColumn .BoxContent {
    max-width: calc(100vw - 40px);
    overflow-x: auto;
  }

  #ContentColumn img {
    max-width: 100%;
    height: auto;
  }

  #ContentColumn input[type="text"],
  #ContentColumn input[type="password"],
  #ContentColumn input[type="email"],
  #ContentColumn select,
  #ContentColumn textarea {
    max-width: 100%;
    box-sizing: border-box;
  }
}