Each section has a comment at both the beginning and the end, making it easier to identify them:
<!--01 TOP -->
<section id="top" class="section__tab section__tab--1">
<!-- Content -->
</section>
<!-- End of top section -->
<!--02 About Me -->
<section id="about" class="section__tab section__tab--2">
<!-- Content -->
</section>
<!-- End of about section -->