To obtain a blurry text effect with CSS, simply apply a text shadow and make the color transparant.
This should be your CSS:
h1.blurred { color: transparent; text-shadow: 0 0 5px rgba(0,0,0,0.5); }
And this your HTML code:
<h1 class="blurred">This is blurred text!</h1>
Ultimately, you should see something like this: