<!DOCTYPE html>
<body bgcolor="black"><form method="get" action ="http://localhost:2013">
<center>
<font color="white" size=65>Enter Word:
<input type="text" name="word" placeholder='Default Text'></font></center>
</br><center>
<font color="Green" size=65>
<input type="submit" value="SUBMIT"></font></center><
form>
</body>
</html>
Just add placeholder='Default Text' to your input element.