app.css

.red{
	color:red; 
	z-index:10;
	font-size:110px;
    opacity: 1;
}
.blue{
	color:blue; 
}
.green{
	color:green; 
}
.yellow{
	color:grey;
	z-index:-100;
	font-size:90px;
	opacity: 0.50;
}
h1{
	display:inline;
	line-height:55%;
	text-shadow:2px 2px white;
}
body{
background: rgb(29,31,33); /* Old browsers */
background: -moz-radial-gradient(center, ellipse cover,  rgba(29,31,33,1) 0%, rgba(0,0,0,1) 100%); /* FF3.6+ */
background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%,rgba(29,31,33,1)), color-stop(100%,rgba(0,0,0,1))); /* Chrome,Safari4+ */
background: -webkit-radial-gradient(center, ellipse cover,  rgba(29,31,33,1) 0%,rgba(0,0,0,1) 100%); /* Chrome10+,Safari5.1+ */
background: -o-radial-gradient(center, ellipse cover,  rgba(29,31,33,1) 0%,rgba(0,0,0,1) 100%); /* Opera 12+ */
background: -ms-radial-gradient(center, ellipse cover,  rgba(29,31,33,1) 0%,rgba(0,0,0,1) 100%); /* IE10+ */
background: radial-gradient(ellipse at center,  rgba(29,31,33,1) 0%,rgba(0,0,0,1) 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#1d1f21', endColorstr='#000000',GradientType=1 ); /* IE6-9 fallback on horizontal gradient */

}