How do you make the radio button text to be clickable too?

Here you want to use the label tag.

Something like:

            <label>
                <input type="radio" name="group1" value="Milk">
                Milk
            </label><br/>

Labels tell the browser that everything contained within should be treated as one element (in terms of text. They are not divs)

Take a look at this for an example: http://www.w3schools.com/tags/tryit.asp?filename=tryhtml_label