style.css

html { 
  background: url(img/bg.jpg) no-repeat center center fixed; 
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}

body {
	text-align: center;
  	font-family: 'Source Sans Pro', "Helvetica Neue", Helvetica, Arial, sans-serif;
}
.content {
	margin-top: 10%;
}

h1 {
	color: white;
	font-size: 56px;
	font-weight: 300;
}

input[type=text] {
	background: url(img/url.png) no-repeat 5px 7.5px white;
	border-radius: 3px;      
    border: 0;
    font-size: 18px;
    padding: 7px 7px 7px 30px;
    text-align: center;
    width: 300px;
}

input[type=submit] {
	background: rgba(255, 255, 255, 0.7);
	border-radius: 3px;
	border: 0;
	color: #444444;
	font-size: 18px;
	margin: 20px;
	padding: 5px 10px;
}

input[type=submit]:hover {
	background: white;

}

.tiny-url, .error {
	background-color: white;
	border-radius: 3px;
	font-size: 18px;
	line-height: 2em;
	margin: auto;
	width: 300px;
}

.error {
	background-color: #ffecec;
	border: 1px solid #f5aca6;
	width: 400px;

}