Add text to different columns

I’m learning HTML and CSS, while doing so I’m creating a web page which replicates a already existing page that I’m using as reference.

The page that I use as reference has a nice header that contains different text in 3 columns.

I am trying to do something similar to that, however it seems im only able to add text to the first column and not the 2nd or 3rd one.

I’m sure this is possible I’m just not sure how.

>Solution :

Maybe…

<header>
<div>text 1</div>
<div>text 2</div>
<div>text 3</div>
</header>

header {
 display: flex;
 flex-flow: row nowrap;
}

div {
 flex: 0 1 33,3%;
}