nav.css

  .nav {
    height: 50px;
    width: 100%;
    background-color: #fff;
    position: relative;
  }
  
  .nav > .nav-header {
    display: inline;
  }
 
  
  
  .nav > .nav-header > .nav-title {
    display: inline-block;
    /* font-size: 22px;
    color: #fff; */
    padding: 10px 10px 10px 10px;
  }
  
  .nav > .nav-btn {
    display: none;
  }
  
  .nav > .nav-links {
    display: inline;
    float: right;
    font-size: 14px;
  }
  
  .nav > .nav-links > a{
    display: inline-block;
    padding: 13px 10px 13px 10px;
    text-decoration: none;
  }

  .nav > .nav-links > a:not(.active) {
    color: #888;
  }

  .active{
    color: rgb(255, 182, 0);
    font-weight: bold;
  }
  
  .nav > .nav-links > a:hover {
    cursor: pointer;
  }
  
  .nav > #nav-check {
    display: none;
  }
  
  @media (max-width:600px) {
    .nav > .nav-btn {
      display: inline-block;
      position: absolute;
      right: 0px;
      top: 0px;
      background-color: rgb(255, 182, 0);
    }
    .nav > .nav-btn > label {
      display: inline-block;
      width: 50px;
      height: 50px;
      padding: 13px;
    }

    .nav > .nav-btn > label > span {
      display: block;
      width: 25px;
      height: 10px;
      border-top: 2px solid #eee;
    }
    .nav > .nav-links {
      position: absolute;
      display: block;
      width: 100%;
      background-color: white;
      height: 0px;
      transition: all 0.3s ease-in;
      overflow-y: hidden;
      top: 50px;
      left: 0px;
    }
    .nav > .nav-links > a {
      display: block;
      width: 100%;
    }
    .nav > #nav-check:not(:checked) ~ .nav-links {
      height: 0px;
    }
    .nav > #nav-check:checked ~ .nav-links {
      height: calc(100vh - 50px);
      overflow-y: auto;
    }
  }