.error{
	text-align: center;
	margin-top: 5%;
	margin-bottom: 5%;
	margin-right: 5%;
	margin-left: 5%;
}
.previous {
	margin-top: 5%;
	margin-bottom: 5%;
	margin-right: 5%;
	margin-left: 5%;
}
.ie {
	margin-top: 5%;
	margin-bottom: 5%;
	margin-right: 5%;
	margin-left: 5%;
}
.new {
	margin-top: 5%;
	margin-bottom: 5%;
	margin-right: 5%;
	margin-left: 5%;
}
.javascript {
	text-align: center;
	margin-top: 5%;
	margin-bottom: 5%;
	margin-right: 5%;
	margin-left: 5%;
}
ul.browsers {
	text-align: center;
	list-style: none;
}