@media screen and (max-width: 428px) {
    section {
      height: auto;
      padding: 50px 0
    }
    .section-box {
      height: auto;
    }
    header {
      flex-direction: column;
      gap: 20px;
    }
    .header-logo {
      font-size: 24px;
      margin: 20px 0;
    }
    nav {
      flex-direction: column;
      gap: 30px;
    }
    .nav-items {
      font-size: 16px;
    }
    .hero-content h3 {
      font-size: 1.2rem;
      letter-spacing: 20px;
    }
    .hero-content h1 {
      font-size: 4rem;
      letter-spacing: 2px;
      margin-top: 10px;
      line-height: 1.2;
      text-align: center;
      z-index: 1;
    }
    .hero-content {
      padding: 50px 0;
    }
    .hero-img {
      width: 100%;
      margin-top: 50px;
      z-index: 1;
    }
    .hero-btn {
      margin-top: 50px;
    }
  
    .content-grid {
      display: flex;
      flex-direction: column;
      height: auto;
      gap: 50px;
      padding: 50px 5% ;
    }
    .about-img {
      width: 100%;
    }
    .section-title {
      font-size: 3.2rem;
      margin-bottom: 20px;
    }
  
    #join-us .content-wrap {
      padding: 50px 5%;
    }
    .input-1 {
      width: 85%;
      padding: 0 20px;
    }
    .checkbox-wrap {
      display: flex;
      justify-content: center;
      flex-direction: column;
      gap: 20px;
      font-size: 16px;
    }
    #join-us .section-title {
      text-align: center;
      font-size: 3rem;
      margin-top: 10px;
    }
    .footer-grid {
      display: flex;
      flex-direction: column;
      gap: 30px;
    }
    .footer-items {
      font-size: 16px;
    }
  
  }
  
  /* Tab */
  @media screen and (min-width: 429px) and (max-width: 1279px) {
    section {
      height: auto;
      padding: 50px 0
    }
    .section-box {
      height: auto;
    }
    header {
      flex-direction: column;
      gap: 20px;
    }
    .header-logo {
      font-size: 24px;
      margin: 20px 0;
    }
    nav {
      flex-direction: column;
      gap: 30px;
    }
    .nav-items {
      font-size: 20px;
    }
    .hero-content h3 {
      font-size: 1.8rem;
      letter-spacing: 25px;
      margin-top: 30px;
    }
    .hero-content h1 {
      font-size: 6rem;
      letter-spacing: 2px;
      margin-top: 30px;
      line-height: 1.2;
      text-align: center;
      z-index: 1;
    }
    .hero-content {
      padding: 50px 0;
    }
    .hero-img {
      width: 100%;
      margin-top: 50px;
      z-index: 1;
    }
    .hero-btn {
      margin-top: 50px;
      font-size: 22px;
    }
  
    .content-grid {
      display: flex;
      flex-direction: column;
      height: auto;
      gap: 50px;
      padding: 50px 5% ;
    }
    .about-img {
      width: 100%;
    }
    .section-title {
      font-size: 3.2rem;
      margin-bottom: 20px;
    }
  
    #join-us .content-wrap {
      padding: 50px 5%;
    }
    .input-1 {
      width: 85%;
      padding: 0 20px;
    }
    .checkbox-wrap {
      display: flex;
      justify-content: center;
      gap: 30px;
      font-size: 20px;
    }
    #join-us .section-title {
      text-align: center;
      font-size: 3rem;
      margin-top: 10px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      row-gap: 50px;
      margin: 0 50px;
    }
    .footer-items {
      font-size: 16px;
    }
  
  }
  
  /* lap */
  @media screen and (min-width: 1280px) and (max-width: 1919px) {
    .header-logo {
      font-size: 28px;
    }
    .nav-items {
      font-size: 16px;
    }
    .hero-content h3{
      font-size: 1.7rem;
    }
    .hero-content h1 {
      font-size: 6rem;
      letter-spacing: 20px;
    }
    .hero-img {
      width: 50%;
    }
    .hero-btn {
      margin-top: -120px;
    }
  
    .section-title {
      font-size: 3.2rem;
      margin-bottom: 20px;
    }
    #join-us .content-wrap {
      height: auto;
    }
  
  }