How to go up a level in the src path of a URL in HTML?

Use .. to indicate the parent directory:

background-image: url('../images/bg.png');

Use ../:

background-image: url('../images/bg.png');

You can use that as often as you want, e.g. ../../images/ or even at different positions, e.g. ../images/../images/../images/ (same as ../images/ of course)

Here is all you need to know about relative file paths:

• Starting with / returns to the root directory and starts there

• Starting with ../ moves one directory backward and starts there

• Starting with ../../ moves two directories backward and starts there (and so on...)

• To move forward, just start with the first sub directory and keep moving forward.

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