.sec-main-header {
    height: 80px !important;            /* Höhe nach dem Scrollen */
    -webkit-transition: height 0.7s ease;
    transition: height 0.7s ease !important;  /* Sanfter Übergang */
    background-color: rgba(255,255,255,1) !important;
  }
  
  @media screen and (max-width: 768px) {
    .sec-main-header {
      height: 60px !important; }
  }
  
  .sec-main-header.scrolled {
    height: 100px !important;            /* Höhe nach dem Scrollen */
    background-color: rgba(255, 255, 255,1) !important;
    transition: height 0.7s ease !important;
  }
  
  @media screen and (max-width: 768px) {
    .sec-main-header.scrolled {
      height: 100px !important; }
  }
  
  .sec-main-header .header-logo {
    height: 50px;
    transition: height 0.7s ease !important;
  }
  .sec-main-header.scrolled .header-logo {
    height: 50px;
  }