body {
	background:url(math.jpg) no-repeat center center fixed;
        background-size:cover;
	font-family: arial;
}

  #wrapper {
		width:900px;
	    margin:0px auto;
		border:10px solid  blue;
		padding:5px;
	}

  header {
		border: 1px solid;
		border-color: red blue green yellow;
		height:50px;
		border-radius:;
        text-align:center;
	    //padding:50px;
	}
	
  footer {
		clear:both;
		text-align:center;
		padding-top:20px;
	}
	
	
  .content1 {
  		border:1px solid red;
		border-radius: ;
		margin-top:5px;
		padding-bottom:5px;
        text-align:center;
	}
	
  .content2 {
  		border:1px solid blue;
		border-radius: ;
		text-align:center;
		margin-top:5px;
		padding:5px;
	}
  .content3 {
		border: 1px solid;
		border-color: red blue green yellow;
		border-radius:;
        text-align:center;
	    //padding:5px;
	}
	
  .images {
	    clear: both;
		padding:20px;
	}
 .green {
        color: green;
		border:1px double green;
		padding-left: 10px;
	    padding-right: 10px;
		margin: 10px;
	}
#generatedLinearGradient{
 /*from http://gradcolor.com/css3-gradient.php?c=3*/

    height: 600px;
    background-color:#daecf5;
    filter:progid:DXImageTransform.Microsoft.gradient(GradientType=0,startColorstr=#daecf5, endColorstr=#76848a);
    background-image:-moz-linear-gradient(top, #daecf5 0%, #76848a 50%,#171a1c 100%);
    background-image:linear-gradient(top, #daecf5 0%, #76848a 50%,#171a1c 100%);
    background-image:-webkit-linear-gradient(top, #daecf5 0%, #76848a 50%,#171a1c 100%);
    background-image:-o-linear-gradient(top, #daecf5 0%, #76848a 50%,#171a1c 100%);
    background-image:-ms-linear-gradient(top, #daecf5 0%, #76848a 50%,#171a1c 100%);
    background-image:-webkit-gradient(linear, right top, right bottom, color-stop(0%,#daecf5), color-stop(50%,#76848a),color-stop(100%,#171a1c));
}
  h1{
  text-align:center;
  }
  p{
  text-align:center;
  }
  body{
  text-align:center;
  {