Thanks guys super busy I'll get back to this when I can - not a high priority currently

Well, then I am glad to show it to you all. There is a news section and a file forum. Remember though, this site was a lot better 10 years ago. Still good place to find some nice software sometimes.

Same here, never heard of it

Hmm, not sure what to do there....

If I disable border-collapse in dev I can see it:

#main_grid table {
  border-collapse: collapse;
}
However it makes all of the borders much wider...

OK, that makes sense then.

Look at the original here:

https://www.jpr62.com/demos/index.php?action=calendar

Here's the code for it:

.calendar_today {
  background: -webkit-gradient(linear, left top, left bottom, from(#ffffff), to(#a7a9ac));
  background: -moz-linear-gradient(top, #ffffff, #a7a9ac);
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=#ffffffff, endColorstr=#ffa7a9ac);
  -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#ffffffff, endColorstr=#ffa7a9ac)";
  -moz-box-shadow: 3px 3px 3px #000;
  -webkit-box-shadow: 3px 3px 3px #000;
  box-shadow: 3px 3px 3px #000;
  filter: progid:DXImageTransform.Microsoft.Shadow(color='#767676', Direction=135, Strength=5);
}

I think something is conflicting with it.

That looks good for sure.   Not sure if it's a box shadow or a border you want.

Fixed. Now the only thing missing for the calendar is the dark right and bottom border for the current day. When I had it working last time it showed but not now. I guess I've got more digging to do. LOL

I believe it's a box-shadow.

Actually, the original one has them all the same color so I'll do it that way.