* {
    box-sizing: border-box;
  }
  body {
    margin: 0;
    font-family: 'Segoe UI';
  }
  .nav {
    width: 100%;
    background-color: black;
    display: flex;
    align-items: center;
    padding-bottom: 9px;
  }
  .nav > .nav-header {
    flex: 0.95;
    padding-left: 1rem;
  }
  .nav > .nav-header > .nav-title {
    font-size: 22px;
    color: #fff;
  }
  .nav > .nav-list {
    display: flex;
    gap: 2rem;
  }
  .nav > .nav-list > li {
    list-style-type: none;
  }
  .nav > .nav-list > li a {
    text-decoration: none;
    color: #efefef;
    cursor: pointer;
  }
  .nav > #nav-check {
      display: none;
  }
  @media (max-width: 480px) {
    .nav {
      padding: 1rem;
    }
    .nav > .nav-btn {
      display: inline-block;
      position: absolute;
      right: 0;
      top: 0;
      padding-top: 0.2rem;
    }
    .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-list {
      position: absolute;
      display: flex;
      flex-direction: column;
      gap: 1rem;
      width: 100%;
      background-color: #1A237E;
      height: 0;
      transition: all 0.3s ease-in;
      top: 40px;
      left: 0;
      overflow: hidden;
    }
    .nav > .nav-list > li {
      width: 100%;
      margin-top: 1.5rem;
    }
    .nav > #nav-check:checked ~ .nav-list {
      height: calc(100vh - 50px);
    }
  }