General Design
The design is made of straight lines and grid style so it looks robust and strong, which matches a construction site where your machines, building, materials, ... are shown.
Overall, Construction Site has a modern, robust style and open design with the full-width layout. Especially, it comes up with a clean and well-organized homepage.
Other elements
Thanks to the orange as the primary color, the appearance is so energetic and I believe that a construction theme needs this character. Besides, some light grey background areas help neutralize the dazzle of the orange elements, making it calmer for your eyes. Moreover, users can change these colors to fit their taste in the Customer.
Poppins is a rounded and straightforward typeface. When used in Construction Field, it's readable, simple, and reduces the sharpness. I think it's a good combination.
The full-screen slider is attractive, I won't refuse that. But I think that you should choose the image here carefully because the text on the slider may make this area quite messy. Moreover, it's quite unclear to read the message on the slider so I think it should have an image overlay or a background box, bolder texts, or anything else to help it legible.
The components in the slider
The homepage's elements are well-blended between the parallax sections, grid section of image, texts, ... bringing about a sense of "standard" and "professionalism". However, when using this construction theme, you should select and resize the images to one similar size. Otherwise, the image section on the homepage will look unsymmetrical as I did here.
The Project section when the images have different sizes
Besides, the Testimonial section I created here looks different from the demo. I prefer the demo style as it's more symmetrical and nicer but I can't find way to edit this section.
The testimonial in my website
Now, moving to inner pages, they are still lively and attractive with the parallax header image. Yet I still think that the title and heading on the hero image hard to read.
The texts on the header image
Talking about the layout, for the inners pages, the sidebar position will decide how the page looks like. You can display the sidebar on the left, right, hide it or even add one on the left and another on the right, depending on your style and purpose. To my mind, a post with a sidebar on the right - the standard and common style - is my favorite.
Responsive
Construction Fields displays nicely on all devices. But when using it on a mobile phone, the orange bar covers the button on the slider. You can check it directly on your phone or use some tools to check. For example, you can see the responsive design and the mistake on mobile here.
The responsive design checked by ami.responsivedesign.is