### Solution
> When you open the website, all you will see is an almost-blank page with the not a lot of text on it.  
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> If you open up Inspector Tools (Ctrl+Shift+I) and navigate to the Sources Tab, you can see the files used by the server. Why is this important? You can hide comments in these files that won't be shown on the browser.  
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> The flag is a comment in the CSS File.
#### **Flag:** nactf{1nspect1ng_sp13s_4_lyf3}