I often get confused with the href attribute, the link tag, and the base tag. I'm unsure how to properly link the CSS file so a file can be moved into a subfolder and still work (example later on) so I went ahead and found out how the href works when specifying a location.
For your knowledge, I'm working with my localhost, so I have the main htdocs folder and inside that, I have multiple folders, each for a project I'm working on. It ends up looking like this:
localhost/index.php (which redirects to localhost/home/index.php)
localhost/home/
localhost/zune/
localhost/school/
localhost/aeac/
And generally the layout of a folder will be something along these lines:
localhost/aeac/images/
localhost/aeac/stylesheets/
localhost/aeac/scripts/
Going on, let's say I have the file localhost/aeac/test/index.html and in it, I have 4 links for testing. I've found out that
<a href="/"> will link to "localhost/"
<a href="./"> will link to "localhost/aeac/test/" (the directory the file is in.)
<a href="../"> will link to "localhost/aeac/" (the directory above the file.)
<a href="about.html">will link to "localhost/aeac/test/about.html" (the directory the file is in.)
Now that I understand href's, I need to understand how to link CSS properly.
Imagine the site's directory looks like this:
localhost/aeac/
localhost/aeac/images/
localhost/aeac/stylesheets/
localhost/aeac/scripts/
and right in the /aeac/ folder I have index.html. The file has a link tag that looks like this:
<link rel="stylesheet" href="stylesheets/main.css" />
So that works out well, main is basically the site's structure/theme and gets included in every file. The problem occurs when I have to make a subfolder. Now we have a localhost/aeac/users/*username*/index.html. The site still uses the main.css, but the link doesn't work anymore because there is no stylesheets folder inside there.
That's where I'm stuck, I imagine that I should be using the base tag to solve my problem but I'm still confused on how that would written. Also, I know I could just change the link tag for all the files in the users folder, but I'd like to know how to do it this way (if that's even possible.)
I believe you want this:
<link rel="stylesheet" href="/aeac/stylesheets/main.css" />
This begins with /, so it will always traverse up from the root, not matter where your page is located (i.e. at /aeac/index.html or at /aeac/users/foo/index.html). Now, if you have control over the tag in each copy of index.html (which you probably do), you could also navigate upwards with .., to ../../stylesheets/main.css, but navigating from the root is probably simpler.