仅从您的设计中将您的网站布局作为图像导入并添加其他功能,是否会对Web开发造成不良影响?

I know this question might be more opinion based, but there has to be a reason for said opinion. It seems like a simpler way to approach web development.
Let's say I did a mock-up for a website with two main columns of content. Now, in terms of translating this into html/css, I'll have to start from sratch, with separating those two columns into two divs, then putting content into those two divs (Sometimes alot of content depending on the aim of the site) and then using css to position each of those divs on left and right and then positioning the individual content in those divs.
Wouldn't it just be best to separate those two columns from your markup, export them as svg/jpg files and then create the two divs and link the images into those two divs? It would just take floating the images on either left/right to mimic the markup.
I'll have an image to explain what I'm talking up just in case some are still confused.
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