@media screen and (max-width: 990px) {
    .container {
      position: relative;
    }
    .navbar-collapse {
      width: 120px;
      padding: 0 20px;
      display: flex;
      flex-basis: auto;
      flex-grow: inherit;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      background: #fff;
      position: absolute;
      right: 0;
      top: 40px;
    }
  
    .navbar-collapse a {
      width: 100%;
      margin: 0 !important;
      padding: 10px 0 !important;
      background: #fff !important;
      border: 0;
      border-radius: 0;
      color: #333;
    }
  
    .navbar-collapse a {
      border-top: 1px solid #ccc;
    }
    .navbar-collapse a:first-child {
      border-top: none;
    }
  
    .highlight-phone {
      height: auto !important;
    }
    .custom-btn {
        text-align: center;
    }
  }