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CSS The Solution

Why is my box model showing different dimensions when viewed on Dev Tools?

Maybe i'm missing something here about browser resizing, but my code seems to match everything and my box renders correctly in the browser, however whenever I inspect the page via Chrome Dev Tools, my box model shows different dimensions to the ones that are displayed in box.png.

.box {
  width: 90%;
  height: 300px;
  max-width: 600px;
  padding: 20px;
  border: 2px solid orange;
  margin: auto;
  overflow-y: scroll;
  box-sizing: border-box;
Rich Donnellan
Rich Donnellan
25,768 Points

Sophie Labrey — updated your code snippet. Check out the Markdown Cheatsheet below the Add an Answer submission for syntax examples, or go to edit your comment and you should see how I formatted it.

1 Answer

Rich Donnellan
Rich Donnellan
25,768 Points

Which values aren't matching for you? The (auto-)margin values will differ based on the width of your viewport. I tested the code and all the other values matched.

Adriana Karlak
Adriana Karlak
1,449 Points

I'm having the same problem this person was having. I've viewed the answers to it but I don't quite understand why it's doing this. Is something wrong? Or is it showing different dimensions because we all have different viewports? In which case the fact that it's not showing the same dimensions would not be an issue.