How to write opening of 1 tab in JS?

Question

css

welovepavel.esy.es/TBee/index.html

//$(".tab_item").not(":first").hide(); // закрывает вкладки при старте
$(".tabs_header .wrapper .tab").click(function() {
  $(".tabs_header .wrapper .tab").removeClass("active").eq($(this).index()).addClass("active");
  $(".tabs_header .tab_item").hide().eq($(this).index()).fadeIn()
}).eq(0).addClass("active");

on initial loading, the text from the second tab appears in 1 "fffff"
Thank you!
The answer was given by Dear Paul!

Answer 1

Set the second taboo to display: none.
PS or try to uncomment the first line of the script you provided (remove the two slashes at the beginning of the line)

Answer 2

Add active style to tabs and toggle it as needed. If there is an active class, then we show the tab; if not, then we hide it

Answer 3

Do everything as shown in the video tutorial, and there will be no such bugs.