.navbar-light .navbar-toggler-icon{
  background-image: url("data:image/svg+xml;charset=utf8,%3Csvg viewBox='0 0 32 32' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='white' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 8h24M4 16h24M4 24h24'/%3E%3C/svg%3E");
}

@media (min-width:0px) and (max-width:600px){

        .col-sm-12 img{
        display: none;
        }
  
  .container-fluid{
    text-align: center;
  }
  .col-sm-6.s3-content {
  padding:100px 30px 100px 30px;
  }
  .col-sm-6{
    display: block;
  }
  .col-sm-12.s6-sub{
  padding:30px;
    
  } 
}
.btn-gradation {
  display: inline-block;
  text-align: center;
  background-image: linear-gradient(#eaeaea 0%, #c6c6c6 100%);
  box-shadow: inset 0 2px 0 rgba(255,255,255,0.5), 0 2px 2px rgba(0, 0, 0, 0.19);
  color: #a5a5a5;
  font-size: 16px;
  text-decoration: none;
  font-weight: bold;
  text-shadow: 1px 1px 1px rgba(255, 255, 255, 1);
  padding: 12px 24px;
  border-radius: 4px;
  font-size: 16px;
}

.btn-gradation:hover {
  opacity: 0.8;
  text-decoration: none;
}
.form-group{
  width: 400px;
 margin: auto;
 padding-top: 10px;
}