Remove right sidebar

I want to remove “right sidebar” from my front page.

What I did was to replace:
<?php get_sidebar( ‘browse’ ); ?>

with:
<?php
if (!is_home() ) {
get_sidebar();
}
?>

And it worked! But it looks weird on the website. https://www.acdcmachine.com/

Should I edit something in the style.css? Or is there a better way to do this?