html - Weird Ghost CSS Bug -

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how possible whole website works without css file styles? have line in header:

<link rel="stylesheet" type="text/css" href="styles.css" />

i deleted styles.css file server, nothing changed. if delete line header there no styles (as expected)

at 1 point noticed none of css changes make have effect, made sure i'm not doing dumb editing or referencing wrong file , there not 2 copies of reason. if change other html files, can see effects, not styles file.

i can force work renaming css file, don't want that.

has seen happen before?

this because caching of css. try clearing cache of browser.

you can prevent css caching below way

<link rel="stylesheet" type="text/css" href="style.css?v=1" />

using php can trick

<link rel="stylesheet" type="text/css" href="style.css?<?php echo date('l js \of f y h:i:s a'); ?>" />

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