niche

What can you tell us about your code?

why do you think you need that?

https://www.w3schools.com/css/css_align.asp

6 warnings and 3 errors.

which specific one do you want to work on first?  

check the validator

https://validator.w3.org/

Always start there

https://www.w3schools.com/css/css_align.asp

Turns out this is the answer:

WHERE t1.id < t2.id 
  AND CONCAT(t1.col1,t1.col2) = CONCAT(t2.col1,t2.col2)

Duh!

this script deletes dupe rows when table_key is a column:

DELETE t1 FROM obssum_history  t1
INNER JOIN obssum_history  t2 
WHERE 
    t1.id < t2.id AND 
    t1.table_key = t2.table_key

 how would I do that when table_key is a column alias?

Already tried something like this (when table_key is NOT contained in the table):

USING CONCAT(col1, col2) AS table_key
DELETE t1 FROM obssum_history  t1
INNER JOIN obssum_history  t2 
WHERE 
    t1.id < t2.id AND 
    t1.table_key = t2.table_key

didn't work.

Use percentages

https://stackoverflow.com/questions/3029422/how-do-i-auto-resize-an-image-to-fit-a-div-container

https://www.w3schools.com/sql/sql_injection.asp

Create a HTML doc with a <div>, put something in it and post your code.  That's most of us got started.

Best to show some relevant code and go from there. 

https://www.w3schools.com/sql/sql_between.asp

where's the ref to the cino directory in "/css/style.css"?

Self Employed or working for someone else?  

what's the w3schools link for comparison?

https://stackoverflow.com/questions/6833867/close-kill-transaction

what does your error reporting say?

http://bdavidxyz.com/blog/how-to-name-css-classes/

4 sub arrays or 2?

What does teamsArrOb actually look like? 

What are you basing your dynamic assignment on?  I don't see a string or array?

REST API is not a database.

https://medium.com/@marinithiago/guys-rest-apis-are-not-databases-60db4e1120e4

Why client side, w/ javascript and some kind of database, instead of server side, w/ something like PHP and MYSQL?

I'd go w/ PHP and MYSQL to dynamically populate a menu, but that's me.

Please confirm that you've thought about client side / server side and purposely chose client side.

Please limit each question to a single question.  I suggest you post a notice that you suspend this thread and re submit per my suggestion.    

EDIT

Also, please limit your code posts to the relevant part and please use the code tags <>.  

I'd do it client side with php.  either way you'd need to know something about php (server side) or javascript (client side).  else, the answer is probably beyond your current capabilities.  Someone else might have a different approach/opinion.

We're  happy to help as long as you try to ask informed questions.  The best hint I can give you is that you'll probably need to use some kind of loop.  so, read up on php loops specifically and php in general and try to rough out how you'd fit a php loop into your code.

First things first, though.  you'll need to set a localhost.  i'd use wampserver for that.  So, install wampserver (assuming you're using windows) and get back with us.  The step after that is familiarizing yourself w/ php.

This will be a leap worth taking.