body {
  margin-top:20px;
}

@media only screen and (min-width : 320px) {}

@media only screen and (min-width : 480px) {}

@media only screen and (min-width : 768px) {
  body {
    margin-top:20px;
  }
}

@media only screen and (min-width : 992px) {}

@media only screen and (min-width : 1200px) {}

@media only screen and (max-width : 1200px) {}

@media only screen and (max-width : 992px) {}

@media only screen and (max-width : 768px) {}

@media only screen and (max-width : 480px) {}

@media only screen and (max-width : 320px) {}

Add responsive widths for bootstrap and treat case for margin top
Add responsive widths for bootstrap and treat case for margin top
