Trouble figuring out how to get my button to submit comment

Try this. You were missing the tags and the “type” attribute for the tag. The php tag at the bottom echo’s the result that was input in the textarea. Read this http://www.w3schools.com/html/html_forms.asp
it should help you get started.

<div class="font-wrap">
<div class="wrapper">
<form action="" method="post">
 <textarea name="comment" id="comment" class="talk-bubblecomment" tabindex="4" placeholder="Enter comment..."></textarea>

<p class="sign-in">
  Post a new comment
</p>
<input type="submit"  value="Submit Comment" />
</form>
<?php echo "$_POST[comment]";?>