@media only screen and (max-width:500px)
{
      /* For mobile phones: */
      [id*=".about_us_main-"] 
      {
        visibility: hidden;
      }
}

.about_us_main {
  width: 0%;
  display: flex;
}

@media screen and (max-width: 1000px) {
  

  .navigation {
    flex-direction: column;
    margin-bottom: 23px;
    
  }

  .nav-left {
    flex-direction: column;
    text-align: center;
    }

  .content-right {
    display: none;
  }


  @media only screen and (max-width: 500px)
  {
        /* For mobile phones: */
        [class*=".home-article-"] 
        {
          width: 300rem;
        }
  }


  .home-article {
    flex-direction: column;
  }

  .home-article-img {
    text-align: center;
  }

  .year-box {
    top: 25px;
    left: 60vw;
    font-size: 11px;
    display: flex;
  }

  .year-box div {
    padding: 0 3px;
    margin: 0;
  }

  .home-article img {
    width: 70vw;
  }
  .form-input {
    width: 50%;
  }
  .form-box input,
  textarea {
    width: 66vw;
  }
  .row {
    flex-direction: column;
  }
  .social {
    padding: 0;
  }
  .post-img {
    height: auto;
    width: auto;;
  }
  .adjust-year {
    position: static;
    height: auto;
    padding: 12px 0px;
    display: flex;
    justify-content: flex-end;
    width: 100%;
  }
}