@media screen and (max-width: 850px) {
  #logo_img {
    width: 100px!important;
  }
  #form1 {
    width:50%;
  }
  .regis {

    width: 100%!important;
  } 
  .regis2 {

    width: 100%!important;
    height: 100%!important;
  } 
}
@media screen and (max-width: 1150px) {
  #logo_img {
    width: 180px!important;
  }
}

body{
  background-color: #ddd;
  font-family: 'Kanit', sans-serif;
}
.carousel-inner img {
    width: 100%;
    height: 100%;
}
a.nav-link {
 font-size: 18px;
 
}
 
.regis {
  float: left;
  width: 25%;
} 




.topnav {
    overflow: hidden;
    background-color: #0e5503;
    height: 40px;
  }

  .topnav a {
    float: left;
    color: #f2f2f2;
    text-align: center;
    padding: 10px 10px;
    text-decoration: none;
    font-size: 15px;
  }
  
  .topnav a:hover {
    background-color: #ddd;
    color: black;
  }
  
  .topnav a.active {
    background-color: #4CAF50;
    color: white;
  }
  
  .topnav-right {
    float: right;
  }