header {
    background-color: var(--secondarycolor);
    box-shadow: 0px 10px 50px 1px rgba(0,0,0,0.75);

    top: 0;
    position: sticky;
    align-self: start;

    z-index: 1;
}

.navigation {
    overflow: hidden;

    padding-left: 20px;
    padding-right: 20px;
}

.navigation a {
    float: left;
    display: block;
    
    padding: 20px;
    text-decoration: none;

    color: var(--text_color);
    font-weight: 600;
    font-size: large;
    
    text-align: center;
}

.navigation a:hover, .navigation .navigation_container:hover{
    background-color: var(--highlight_color);
}

.active {
    background-color: var(--highlight_color);
}

.navigation img {
    /* float: left; */
    padding-left: 5px;
    padding-right: 5px;
    height: 30px; 
}

.navigation .icon {
    display: none;
}

.navigation .titel {
  display: none;
}

.navigation_container {
    float: left;
    overflow: hidden;
}

.navigation_container .navigation_button, .titel{
    color: var(--text_color);
    font-weight: 600;

    border: none;
    outline: none;
    padding: 20px;
    
    background-color: inherit;
    font-family: inherit;
    font-size: large;

    margin: 0;
}

.navigation_content {
    display: none;
    position: absolute;
    background-color: var(--primary_color);

    min-width: 250px;

    box-shadow:  25px 20px 50px 5px rgba(0,0,0,0.75);
    z-index: 1;
}

.navigation_content a {
  float: none;
  padding: 15px;
  text-decoration: none;
  display: block;
  text-align: left;
  font-size: normal;
  font-weight: normal;
}

.navigation_content a:hover {
  background-color: var(--highlight_color);
}

.navigation_container:hover .navigation_content {
  display: block;
}

@media screen and (max-width: 996px) {
  .navigation {
    padding: 0;

  }
  .navigation a, .navigation_container:not(:first-child) .navigation_button {
    display: none;
  }
  .navigation a.icon {
    float: right;
    display: block;
  }

  .navigation h2.titel {
    float: left;
    display: block;
  }
}

@media screen and (max-width: 996px) {
  .navigation.responsive {position: relative;}
  .navigation.responsive .icon {
    position: absolute;
    right: 0;
    top: 0;
  }
  .navigation.responsive .titel {
    display: none;
  }
  .navigation.responsive a {
    float: none;
    display: block;
    text-align: left;
    font-size: small;
  }
  .navigation.responsive .navigation_container {float: none;}
  .navigation.responsive .navigation_content {position: relative;}
  .navigation.responsive .navigation_container .navigation_button {
    display: block;
    width: 100%;
    text-align: left;
  }
}