Help with fullcalendar main.css

https://cdn.jsdelivr.net/npm/fullcalendar@6.1.17/main.css
hello eveeryone,
im making a blood pressure chart readings
you can find the repository here: GitHub - footroot/blood_pressure_chart: blood pressure chart and record on database project with html, css, javascript, php and mysql database. checking other options like node.js and mongo DB
and website: Register - Blood Pressure Tracker
Register and login are workin fine
when you login, you can see options to enter readings for a blood presure follow up.
the readings are recorded in a DB … we have a chart and a calendar.
the calendar should show the readings on the date where those where introduced.
in theory the link ; https://cdn.jsdelivr.net/npm/fullcalendar@6.1.17/main.css
should do the work but looks like the file main.css is not there.
Does anybody know why is that file missing?
I notice that when I put the path without the end, /main.css somethings on the calendar works.
i know at the moment everything is a bit vague and i just explain a bit of the problems i found in the webapp. but please. can we start for that problem?
thank you
Im looking forward for feedback.
if is anything I should not write here, please let me know

Is main.css a file you have locally?

It’s not in the github repo, maybe it’s not pushed because it’s in your.gitignore file for some reason?

Your html also does not refer to main.css are you sure it exists? The html only refers to style.css

<title>Blood Pressure Tracker</title>
    <link rel="stylesheet" href="style.css">

hello, no main.css is the file which in theory should go on the CDN link.
which is:
https://cdn.jsdelivr.net/npm/fullcalendar@6.1.17/main.css

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Blood Pressure Tracker</title>
<!-- -->
https://cdn.jsdelivr.net/npm/fullcalendar@6.1.17/main.css
<!-- -->
    <link rel="stylesheet" href="css/style.css">
    <!-- <link href='https://cdn.jsdelivr.net/npm/fullcalendar@6.1.17/main.css' rel='stylesheet' /> -->
    <script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
    <script src='https://cdn.jsdelivr.net/npm/fullcalendar@6.1.17/index.global.min.js'></script>
</head>

I see

It does appear in some older versions. Maybe this is an old file that has been written out but the link hasn’t been removed.

https://cdn.jsdelivr.net/npm/fullcalendar@5.11.0/

You would have to ask whoever maintains this:

https://github.com/fullcalendar/fullcalendar/issues

ok, ill try on that link you pass me.
thank you.