Hello Sir.
I found your "Design a landing page mockup " job and I am very very interested in this job. As a front-end developer, as well as wordpress developer, I can handle this job for you. I do know HTML/CSS/Javascript, so I can use it to change the look of your site, and I can do it very fast. And of course, as a wordpress developer, I can use PHP code to add widget areas, menus, etc. I understand everything you meant, and I can do it, for sure.
So, let have a look at the job I've done:
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and much more...
Please contact and give me more information, so we can go further.
Thank you for your time and consideration.
Tuan Hoang