.wrapper {
    width: 90%;
    max-width: 45rem;
    margin: auto;
  }
  
  h1 {
    font-size: 3.5rem;
  }
  
  h2 {
    font-size: 2.5rem;
  }
  
  #font-size-toggle {
    position: fixed;
    right: 0;
    bottom: 0;
    display: flex;
    background: #3c3c3c;
    color: #fff;
    transform: translate(calc(20px + 2.7em));
    transition: 0.3s;
    z-index:99;
  }
  
  #font-size-toggle.expanded {
    transform: none;
  }
  
  .font-size-toggle__label-wrap {
    width: 2.5em;
    height: 10em;
  }
  
  .font-size-toggle__label.font-size-toggle__label {
    display: flex;
    justify-content: center;
    align-items: center;
    -ms-writing-mode: tb-lr;
        writing-mode: vertical-lr;
    transform: rotate(180deg);
    text-decoration: none;
    color: black;
    transition: 0.2s;
    height: 100%;
    width: 100%;
    opacity: 0.6;
    font-weight: bold;
  }
  
  .font-size-toggle__label.font-size-toggle__label:hover,
  .font-size-toggle__label.font-size-toggle__label:focus {
    opacity: 1;
  }
  
  .font-size-toggle__control-panel {
    display: flex;
    flex-flow: column;
    justify-content: center;
    align-items: center;
    padding: 10px;
  }
  
  .font-size-toggle__increase.font-size-toggle__increase,
  .font-size-toggle__decrease.font-size-toggle__decrease {
    background: none;
    border: solid 2px black;
    color: black;
    height: 1.6em;
    width: 1.6em;
    border-radius: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: 0.2s;
  }
  
  .font-size-toggle__increase.font-size-toggle__increase:hover,
  .font-size-toggle__decrease.font-size-toggle__decrease:hover,
  .font-size-toggle__increase.font-size-toggle__increase:focus,
  .font-size-toggle__decrease.font-size-toggle__decrease:focus {
    background: black;
    color: white;
  }
  
  .font-size-toggle__scale {
    padding: 10px 0;
  }
  
  @media (max-width: 767px) {
    #font-size-toggle {
      top: auto;
      bottom: 0;
      flex-flow: column;
      transform: translateY(calc(10px + 2.5em));
      padding: 0 10px 10px 0;
    }
  
    .font-size-toggle__label.font-size-toggle__label {
      -ms-writing-mode: initial;
          writing-mode: initial;
      transform: none;
    }
  
    .font-size-toggle__control-panel {
      flex-flow: row;
    }
  
    .font-size-toggle__scale {
      padding: 0 10px;
    }
  
    .font-size-toggle__label-wrap {
      height: 2.5em;
      width: 10em;
    }
  }

  /* Angepasst Footer */

  #font-size-toggle {
    position: relative;
    background: none;
    transform: none;
  }

  .font-size-toggle__label-wrap {
    display: none;
  }