I will make the website using Bootstrap for responsiveness, I have a sample project of internship portal, you can see it at... internship.ashutoshtyag.xyz...It is completely made in bootstrap. The project will be delivered to you on time.
And the UI will be take cared regarding the normal web users perspective.
I will only handle the website designing and development. Deployment on the server and other things are excluded of this amount.
PS: I am not a pro SEO, so I'll not guarantee the ranking