* {
  box-sizing: border-box;
}
body, html {
    height: 100%;
    margin: 0;
}
/* For mobile phones: */
@media only screen and (max-width: 600px) {
  .forall{
    display: none;
  }
}
@media only screen and (min-width: 600px) {
  .formobile{
    display: none;
  }
}

@media only screen and (min-width: 768px) {
  .formobile{
    display: none;
  }
}