Third element ends up in new line in Safari - css

Question

I have a simple Bootstrap layout:
<div class="row">
<div class="footer_column col-md-4">
<div class="footer_item">
ABOUT
</div>
<div class="footer_item">
Contact Us
</div>
<div class="footer_item">
Terms & Conditions
</div>
<div class="footer_item">
Privacy Policy
</div>
</div>
<div class="footer_column col-md-4">
<div class="footer_item">
SITE RESOURCES
</div>
<div class="footer_item">
General Rules
</div>
<div class="footer_item">
Scoring
</div>
<div class="footer_item">
Game Coins
</div>
<div class="footer_item">
<a class="store-show">Store</a>
</div>
<div class="footer_item">
Account Types
</div>
</div>
<div class="footer_column col-md-4">
<div class="footer_item">
MORE FANTASY FOOTBALL
</div>
<div class="footer_item">
<div class="footer_item">
Fantasy Game
</div>
</div>
</div>
</div>
In Chrome and Firefox it looks like it's supposed to (a 3 column layout):
But in Safari the 3rd column ends up in a new line below the other. When I inspect it, it has the correct width (exactly 1/3 of the total row width) in both Chrome and Safari.
I am seeing this when I inspect the element:
.col-md-4 {
flex: 0 0 33.3333333333%;
max-width: 33.3333333333%;
}
When I remove the max-width attribute, each column spreads out to 100%. This is expected I suppose. But when I add width: 20% for example, the width of each column remains the same as it was!
How can I make Safari behave?

Answer 1

If you're using a container around the row then add a helper class to remove the before content.
<div class="container before-fix"><!-- content --></div>
.before-fix::before {
content: none;
}

Answer 2

I fixed this here. The problem was the flex was overriding the default width.
This is what the CSS is now:
.col-md-4 {
flex: none;
max-width: 33.3333333333%;
width: 20%;
}
It successfully sets the width of the columns to 20% instead of 33.3%.

Answer 3

Here's a really clean way using grid instead of bootstrap...
.three-columns {
display: grid;
grid-template: 1fr 1fr 1fr;
}
<div class="three-columns">
<div>column 1</div>
<div>column 2</div>
<div>column 3</div>
</div>