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HTML How to Make a Website Responsive Web Design and Testing Adjust the Profile Page and Header

Why would I float my logo to the left as opposed to aligning it left?

Why does floating make more sense than aligning? Is it an economy thing -- or planning for future tinkering ?

You're floating the image to the left for when the page drops down to mobile. Float ensures that the image sites to the left of the text opposed to being pushed around.

So -- floating your logo as opposed to aligning it insures it wont smash into stuff when scaling down to mobile. Thanks!

http://www.w3schools.com/cssref/pr_class_float.asp

Go to the examples and it will show you exactly what the floats do.