nebula.js/website/static/css/custom.css

/* your custom css */

@media only screen and (min-device-width: 360px) and (max-device-width: 736px) {
}

@media only screen and (min-width: 1024px) {
}

@media only screen and (max-width: 1023px) {
}

@media only screen and (min-width: 1400px) {
}

@media only screen and (min-width: 1500px) {
}

#footer .qlikOpenSource {
  margin: 1em auto;
  width: 200px;
  display: block;
  opacity: 0.6;
}

#footer .qlikOpenSource:hover {
  opacity: 0.9;
}