.knoppenmenu2 img  {
    margin-top: 6px;
    margin-left:15px;
    margin-right: 15px;
    width:55%;
    height: auto;
    transition-property: transform;
    transition-duration: 0.6s; 
                }

.dropdown img{
    width:75%;
    height: auto;
    transition-property: transform;
    transition-duration: 0.6s; 

}
.knoppenmenu2 img:hover, .dropdown img:hover {
                    transform:scale(0.8);   
                 }
.knoppenmenu2 , .dropdown {
               position: relative;
               display: flex;
              justify-content: center;
}

.dropdown {
             display:inline-block;
          }
          .dropdown-content {
            display: none;
            position: absolute;
            background-color: transparent;
            min-width: 100px;
          /*  box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);*/
            z-index: 1;
            margin-left: 40px;
            margin-top: -10px;
          }
          .dropdown-content a {
            color: RGB(89,55,35);
            padding: 1px 16px 1px 16px;
            margin-bottom: -7px;
            text-decoration: none;
            display: block;
            font-size: 80%;
            opacity: 0.2;
          }
          .dropdown-content a:hover {
            background-color: transparent;
            opacity: 1;
          }
          .dropdown:hover .dropdown-content {
            display: block;
          }
          .dropbtn {
            background-color: transparent;
            border: none;
            cursor: pointer;
          }

          .image-button {
            border: none;
            background-color: transparent;
            cursor: pointer;
            padding: 0;
          }