body {
	margin: 0;
	padding: 0;
	font-family: 'Open Sans', sans-serif;
	font-size:16px;
	text-align:center;
}
.demo_wrapper {
	max-width: 900px;
	margin: 0 auto;
}
@media only screen and (max-device-width: 800px), screen and (max-width: 800px) {
  .demo_wrapper {
    max-width: 900px;
	text-align:center;

  }  
}
.demo_block {
	max-width: 900px;
	text-align:center;

}