.demo img {
	position:absolute;
	width:100vw;
   height: 100vh;
	filter: brightness(1.3);
}

.dark {
	background:#020202;
}

.dark h1 {
	color:#ccc;
}




.section-anterior {
	display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  text-align: center;
  width: 100%;
  height: 100vh;
  overflow: hidden;
}

.demoWrapper {
 	width:100%;
	height:100vh;
	display:flex;
	justify-content:center;
}


.demo {
	position:relative;
	overflow:hidden;
	width:100vw;
	height:100vh;
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#2e2155', endColorstr='#040313',GradientType=1 );

}

/* responsive css
@media only screen and (max-width: 600px) {
	.demo img {
		width:300px;
		height:300px;
	}
	
	.demoWrapper {
		height:300px;
	}
	.demo {
		height:300px;
		width:300px;
	}
}
*/