@media screen and (max-width: 1200px){
  .mess{
    width: 550px;
  }

  .serbox {
    width: 480px;
    height: 320px;
  }

  .hover-img{
    width: 480px;
    height: 280px;
  }
}

@media screen and (max-width: 1023px){
  .home{
    background-image: url('../images/1bg.jpg');
  }

  .mess{
    width: 100%;
    top:150px;
    right: 0;
    left: 0;
    bottom: auto;
  }

  .about{
    padding: 100px 0 300px 0;
    background-image: url('../images/2bg.jpg');
    background-position: bottom;
    background-size: contain;
    background-repeat: no-repeat;
    background-color: #e3e3e5;
  }

  .boxtwo{
    width: 100%;
  }

  .serbox{
    margin: 20px auto;
  }
}

@media screen and (max-width: 767px){
  .logobox{
    width: 150px;
  }

  .nav{
    display: none;
  }

  .showmobi{
    display: block;
  }

  .btnmenu{
    float: right;
    margin-right: 20px;
    margin-top: 5px;
  }

  .line1{
    font-size: 20px;
  }

  .line2{
    font-size: 28px;
  }

  .textbox{
    width: auto;
    padding: 0 20px;
  }

  .serbox{
    width: 300px;
    height: 205px;
    margin: 0 auto;

  }

  .hover-img{
    width: 285px;
    height: 165px;
  }
}