Hello,
Yes the above code works! Make sure that you use this code directly after the .content-wrap Section starts. However, if you want to keep all the Sections connected, you can simply use the No margin Helper Classes:
<div class="section notopmargin nobottommargin full-screen">
<div class="container clearfix">
1
</div>
</div>
<div class="section notopmargin nobottommargin full-screen">
<div class="container clearfix">
2
</div>
</div>
<div class="section notopmargin nobottommargin full-screen">
<div class="container clearfix">
3
</div>
</div>
This will definitely work fine. Hope this Helps!
Let us know if we can help you with anything else or if you find any further issues.