Why is a column going into the next row when there are only 12 columns?

I have a row with 4 columns that are each 3 wide, which adds up to the 12 that are supposed the be in a row, but for some reason the last one is still going onto a new row. Any idea how to fix this? Here’s my code: <div class=”container text-center”> <h3>Welcome to “Ender’s… Read More Why is a column going into the next row when there are only 12 columns?

Python: ICD-10 RegEx

Goal: create regex of ICD-10 codes. Format Compulsory start: Letter, Digit, (either Letter or Digit), Optional end: has a . then up to 4 Letters or Digits I’ve most of the 1st half: r'[A-Z][0-9][0-9]’ The second half I’m stuck on: ([a-z]|[0-9]){1,4}$ If there is something generated, it must have a dot . Examples: .0 or… Read More Python: ICD-10 RegEx