@media screen and (max-width: 850px) {
  header{
      margin: 0 auto;
      padding: 40px 0 40px 0 !important;
  }
  .list{
      display: flex;
      flex-direction: column;
  }
  .content ul{
      padding-left: 0;
      list-style-type: none !important;
      text-align: center;
  }
  .modal-btn{
      flex-direction: column;
  }
  .full-screen{
    display: none;
  }
  .content h2{
    font-size: 2.5em;
  }
  h1{
    font-size: 3em;
  }
  #myModal{
    overflow: scroll;
    height: 100%;
  }
}