Avoid using Windows-style paths in the href
attributes.
Instead, you can utilize the file URI scheme to specify paths to local files:
<link rel="stylesheet" href="file:///D:/bootstrap/cssbootstrap.min.css">
You can also employ directory traversal techniques by using dots and slashes:
.
to refer to the current location
..
to move up a directory
../
for the parent of the current directory
./
for the current directory
/
for the root of the current directory
For example, if there is a Bootstrap folder in your WWW root, this method will work:
<link rel="stylesheet" href="/bootstrap/cssbootstrap.min.css">
According to the W3C specification, the href
attribute must contain a valid non-empty URL potentially surrounded by spaces.
( ... ) should have a valid non-empty URL that may be enclosed in spaces
If you want to explore all possible ways further, you can refer to the W3C specification on valid URLs.