@media (max-width: 900px) {
  .block {
    flex: 1 1 100%;
    border-right: none;
    border-top: 1px solid #fff;
  }

  .block:first-child {
    border-top: none;
  }

  .head_h1 {
    flex-direction: column;
  }

  .block_h1 {
    max-width: 100%;
    padding: 10px;
  }

  .block_h1 h1 {
    text-align: center;
  }

  .block-n,
  .block-r {
    flex: 1;
  }

  .button-sticky {
    position: relative;
    padding: 15px 15px 0 0;
    top: -7px;
  }

  .button-sticky span {
    position: relative;
    top: -25%;
    left: 50%;
  }

  .form_style {
    margin: 10px auto;
    padding: 10px;
  }

  .form_row {
    flex-direction: column;
    gap: 0;
  }

  .button-home {
    float: none;
    right: -15px;
  }

  .container-all-item {
    flex-direction: column;
  }

  .container-all-item .container-all-left,
  .container-all-item .container-all-right {
    border-right: none;
    border-left: none;
  }

  .container-all-item>div {
    padding: 3px;
  }

  .container-all-item .container-all-left {
    width: 100%;
  }

  .container-all-right li {
    position: relative;
    left: -20px;
  }

  .dd-all {
    max-width: 100%;
  }
  h4 {
    padding: 20px 10px 0 10px;
  }
  .reverse-t:nth-child(2) {
    flex-direction: column-reverse; 
  }
  .reverse-p:nth-child(4) {
    flex-direction: column-reverse; 
  }
}