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This is HTML file.
All the lines are of same width and height but this Windows 10 Laptop shows different sizes.
It changes sizes on zoom in and Zoom Out.
Click image for larger version. 

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I am trying to figure out what is the problem since last two days.
Tried everything.
Completely formatted and re-installed Windows 10.
Drivers are downloaded from Lenovo's website.

Laptop is Lenovo IdeaPad 320
Intel 520 integrated graphics
Intel i3 6th Gen 2GHz
12 GB RAM (Came with 4 GB, I installed extra 8GB RAM)
Replaced HDD with SSD.