New to CSS

<form action="" method="get">
<ul>
<li>
    <label for="name"> Enter your First and Last name</label>
	<input id="name" name="name" />
</li>
<li>
	<label for="age" id="age"> Enter your age</label>
	<input id="age" name="age" />
</li>
<li>
 
	<label for="comments"> Enter your comments</label>
	<textarea id="comments" name="comments"> </textarea>
</li>
 
<li>
	<label for="Favorite language"> What is your favorite language</label>
	<input type="checkbox" id="Python" name="Python" />Python</input>
	<input type="checkbox" id="Javascript" name="Javascript" />Javascript</input>
	<input type="checkbox" id="CSS" name="css"> CSS</input>
</li>
 
	<input type="submit" />
 
 
</ul
 
 
 
 
 
</form>
 
form li 
{
	font-family: sans-serif;
	padding-bottom: 15px;
	font-weight: bold;
 
}
form ul
{
	list-style: none;
	padding-left: 0;
	text-align: left;
}
textarea
{
	width: 300px;
	height: 150px;
}
form		
{
width:250px;
}
label
{
	display: block
}
#comments
{
padding-left: 1px;
}
#age
{
	padding-right: 15px;
	position: relative;
	left: 250px;
	bottom: 58;
}