example.css

div {
  background: url('data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4gPHN2ZyB2ZXJzaW9uPSIxLjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+PGRlZnM+PGxpbmVhckdyYWRpZW50IGlkPSJncmFkIiBncmFkaWVudFVuaXRzPSJ1c2VyU3BhY2VPblVzZSIgeDE9IjUwJSIgeTE9IjAlIiB4Mj0iNTAlIiB5Mj0iMTAwJSI+PHN0b3Agb2Zmc2V0PSIwJSIgc3RvcC1jb2xvcj0iIzBlMWIzMSIvPjxzdG9wIG9mZnNldD0iMTAwJSIgc3RvcC1jb2xvcj0iIzBhMTMyMiIvPjwvbGluZWFyR3JhZGllbnQ+PC9kZWZzPjxyZWN0IHg9IjAiIHk9IjAiIHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9InVybCgjZ3JhZCkiIC8+PC9zdmc+IA==');
  background: -webkit-gradient(linear, 50% 0%, 50% 100%, color-stop(0%, #0e1b31), color-stop(100%, #0a1322));
  background: -webkit-linear-gradient(top, #0e1b31,#0a1322);
  background: -moz-linear-gradient(top, #0e1b31,#0a1322);
  background: -o-linear-gradient(top, #0e1b31,#0a1322);
  background: -ms-linear-gradient(top, #0e1b31,#0a1322);
  background: linear-gradient(top, #0e1b31,#0a1322);
}