.dropbtn {
    /* background-color: #4CAF50; */
    background-color: #333;
    color: dodgerblue;
    padding: 16px;
    font-size: 16px;
    border: none;
    cursor: pointer;
    transition: background-color 0.5s ease-out, color 0.5s linear;
    /* transition: color 0.5s linear;     */
  }
  
  .dropdown {
    position: relative;
    display: inline-block;
  }
  
  .dropdown-content {
    /* display: none; */
    position: absolute;
    background-color: #f9f9f9;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    z-index: 99999999;
    visibility: hidden;
    opacity: 0;
    transition: visibility 0.1s, opacity 0.5s linear;
  }
  
  .dropdown-content a {
    color: black;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    width: 100%;
    text-align: left;
  }
  
  .dropdown-content a:hover {
    background-color: #f1f1f1;   
    visibility: visible;
    opacity: 1;
}
  
  .dropdown:hover .dropdown-content {
    display: block;
    visibility: visible;
    opacity: 1;
}
  
  .dropdown:hover .dropbtn {
    /* background-color: #3e8e41; */
    background-color: gainsboro;
    color: black;
    visibility: visible;
    opacity: 1;  }