I'm new to HTML/CSS and am trying to change an image on the website I am working on. There's an image saved to the website (at foo.com/bar, the CSS has it set at /bar), and I don't know how to upload a picture from there. Sorry this is such a basic question but I don't know much at all about CSS/HTML
EDIT: My bad for not explaining myself well enough, I was in a hurry to finish yesterday.
We have the image but it's not uploaded to the website. The original image we're trying to replace is uploaded to foo.com/image/bar.jpg, but it was uploaded there before I started working this job and I don't know how to replace it or put another image in its place in the CSS. Should I just change the CSS to look at the file's location on the computer, like
<img src = "C:foo/bar.jpg">