html,
body {
  height: 100%;
}

body {
  padding-top: 5rem;
  background-color: #f5f5f5;
}

.form-signin {
  max-width: 25rem;
  margin: auto;
}


@media  only screen and (max-width : 768px) {
  .form-signin {
    max-width: 80%;
    margin: auto;
        
        
      }
  }