change heading

to have a better integration and better ranking in google : you have to have :

1.-> <h1>
1.1. -> <h2>
1.1.1. -> <h3>

...

instead of

1.<h3 class="heading1-">
1.1 <h3 ass="heading1-1-">
1.1.1 <h3 class="heading1-1-1">