.nav-panel {
    height: 100vh; 
    width: 0; 
    position: fixed; 
    z-index: 11; 
    top: 0;
    right: 0;
    background-color: #242424; 
    overflow-x: hidden; 
    padding-top: 60px; 
    transition: 0.5s; 
  }
  
  .nav-panel a {
    padding: 8px 8px 8px 32px;
    text-decoration: none;
    font-size: 20px;
    color: #e2e2e2;
    display: block;
    transition: 0.3s;
  }
  
  .nav-panel a:hover {color: #f0cd14;  }
  
  .nav-panel .closebtn {
    position: absolute;
    top: 0;
    right: 25px;
    font-size: 36px;
    margin-left: 50px;
  }
  
  .openbtn {
    cursor: pointer;
    background: rgb(251,230,109);
    background: linear-gradient(180deg, rgba(251,230,109,1) 0%, rgba(240,205,20,1) 100%);
    width: 53px;
    height: 53px;
    border: none;
    border-radius: 15px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    -webkit-justify-content: center;
    -moz-box-justify-content: center;
    align-items: center;
    -webkit-align-items: center;
    -moz-align-items: center;
  }

  .openbtn:hover {background: rgb(251,230,109);}
  
  .openbtn .menu-line {
    background-color: #333;
    width: 30px;
    height: 3px;
    margin-top: 2px;
    margin-bottom: 2px;
  } 

  /* ------------------------------------------- */

  @media screen and (min-width:100px) and (max-width: 1100px) {
    .openbtn {width: 45px; height: 45px;}
    .openbtn .menu-line {width: 22px;}
  }
  @media screen and (min-width:100px) and (max-width: 600px) {
    .openbtn {width: 40px; height: 40px; border-radius: 10px;}
    .openbtn .menu-line {width: 19px;}
  }