@media screen and (min-width: 850px) {
  .mainviual{
    margin-top: 80px;
  }
  .contact{
    max-width: 1100px;
    margin: 30px auto 60px;
    & h2{
      font-size: 230%;
      letter-spacing: 1px;
    }
    .flex-box{
      display: flex;
      & > div{
        width: 40%;
      }
    }
    .text{
      font-size: 116%;
      letter-spacing: 1px;
      line-height: 1.8;
      border: 2px solid #5cc5c5;
      padding: 15px;
    }
    & h3{
      font-size: 230%;
      text-align: center;
    }
    .carefull{
      padding: 15px 20px;
      font-size: 116%;
      letter-spacing: 1px;
      line-height: 1.8;
    }
  }
}