Theme Twenty Seventeen - Make Margins Smaller So That Text is Wider

I'm sure this is a very common question so I apologize in advance if this annoys some people.

This is my first ever blog so I have little to absolutely no knowledge on how to manipulate the elements to my liking.

The text in the blog uses about a third of the actual sites size and leaves a lot of empty space.

I would like this to use about 75% of the websites size. Attached is a image to give an idea of what is currently going on.

If you are going to tell me to use any form of coding, could you please include how I go about inserting said code into the website as again, super new here.

Thank you so much for anyone that is available to help.

Topic theme-twenty-seventeen text Wordpress

Category Web


From the screenshot, at the bottom of the left menu, there is 'Additional CSS', add this code there. Then hit publish.

@media screen and (min-width: 48em){
 body.page-two-column:not(.archive) #primary .entry-content {
    width: 75%;
}
}

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