Can't remove margins on react web app

Question

I am having trouble removing these huge white margins on my react project. Below are some of the solutions I have tried.

* { margin: 0; padding: 0; }

/-/-/-/

body {
  max-width: 2040px;
  margin: 0 auto;
  padding: 0 5%;
  clear: both;
}

I have tried every variation. My only installed dependencies that should affect anything CSS wise is bootstrap and I don't think thats it. I tried adjusting max-width to a value of 2040px just to test if it would work and there appears to be a limit to which I can set the width. Help would be appreciated.

I should also mention that this is persistent throughout the entire page. This issue is not limited to the background image which I am linking in the css file White Margins

Answer 1

All the browsers uses different default margins, which causing sites look different in the other browser.

The * is wildcard, means all elements present in our site (consider as universal selector), so we are setting each and every element in our site to have zero margin, and zero padding, to make the site look the same in every browsers.

If your style not getting applied then you can use !important to override style,

* {    
    margin: 0 !important;
    padding: 0 !important;
}