Why isn't my CSS working? Understanding specificity and the override mechanism

I added CSS, but the text color and margins didn't change.It worked when I rewrote the same specification at the bottom of ...

Why do images appear locally but disappear in production? The basics of file paths

Images that displayed normally while you were working on your computer may suddenly stop appearing once you upload them to a ...
Boston University

Here is how you can start using CSS!

Fist to create a CSS file, simply go to "save as...". Save the file as .css. Be sure to save the CSS file with your HTML files! To link the CSS file to your HTML file ...