.button-container ul {
  display: flex;
  justify-content: right;
  margin-right: 5%; 
  margin-top: -45px;
}
.button-container ul a {
  list-style: none;
  margin-left: 13px;
}
.button-container ul a.active {
  font-size: 1.1rem;
  display: inline-flex;
  cursor: pointer;
  text-decoration: none;
  color: black;
  background: var(--clr-yellow);
  box-shadow: inset 0 0 0.5em 0 var(--clr-neon), 0 0 0.5em 0 var(--clr-neon);
  padding: 0.2em 1em;
  border-radius: 0.25em
}

/* für Neon eingefügt */
:root {
    --clr-neon: hsla(17, 100%, 54%, 0.986);
    --clr-green: hsla(76, 75%, 57%, 0.973);
    --clr-yellow: hsla(61, 87%, 59%, 0.986);
    --clr-bg: hsla(0, 0%, 0%, 0.986);
  }
 
  .neon-button {
    font-size: 1rem;
  
    display: inline-flex;

    cursor: pointer;
    text-decoration: none;
    color: var(--clr-green);
    border: var(--clr-neon) 0.125em solid;
    padding: 0.25em 1em;
    border-radius: 0.25em;
  
    text-shadow: 0 0 0.125em hsl(0 0% 100% / 0.3), 0 0 0.45em currentColor;
  
    box-shadow: inset 0 0 0.5em 0 var(--clr-neon), 0 0 0.5em 0 var(--clr-neon);
  
    position: relative;
  }
  
  .neon-button::before {
    pointer-events: none;
    content: "";
    position: absolute;
    background: var(--clr-neon);
    top: 120%;
    left: 0;
    width: 100%;
    height: 100%;
  
    transform: perspective(1em) rotateX(40deg) scale(1, 0.35);
    filter: blur(1em);
    opacity: 0.7;
  }
  
  .neon-button::after {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    box-shadow: 0 0 2em 0.5em var(--clr-neon);
    opacity: 0;
    background-color: var(--clr-neon);
    z-index: -1;
    transition: opacity 100ms linear;
  }
  
  .neon-button:hover,
  .neon-button:focus {
    color: var(--clr-bg);
    text-shadow: none;
  }
  
  .neon-button:hover::before,
  .neon-button:focus::before {
    opacity: 1;
  }
  .neon-button:hover::after,
  .neon-button:focus::after {
    opacity: 1;
  }
/* für Neon eingefügt */ 

.toggle-button
{
    margin-right: 3%;
    position: absolute;
    top: 25px;
    right: 25px;
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 25px;
}
.toggle-button .bar
{
    height: 4px;
    width: 100%;
    background-color: var(--clr-neon);
    border-radius: 100px;
}

@media(max-width: 800px)
{
  .button-container 
  {
      display: none;
      position: absolute;
      margin-top: 110px;
      margin-left: 50%;
      transform: translateX(-50%);  /* um genau die Mitte des Objekts zu positionieren
      sonst wird es vom Rand aus zentriert und nicht 100% zentriert */
      flex-direction: column;
      width: 140px;
      
      
  }
  .toggle-button
  {
      display: flex;
  }
  
  .button-container ul
  {
      display: flex;
      flex-direction: column;
      align-items: center;
      width: 100%;
      text-align: center;
      border: solid 2px var(--clr-bg);
      background: url(pp.jpg);
      border-radius: 15px;
      box-shadow: 0 0 2em 0.5em var(--clr-neon);
  }
  .button-container ul a 
  {
    margin: 10px;
    background-color: var(--clr-neon);
    
    box-shadow: 0 0 2em 0.5em var(--clr-neon);
    color: var(--clr-bg); 
  }
  .button-container ul a .active
  {
      font-size: 1rem;
      border-radius: 0.35em;
  }
  .button-container ul a:hover
  {
      background-color: var(--clr-yellow);
      color: var(--clr-bg);
  }
  
  .button-container.active
  {
      display: flex;
      
  }
}