Adding a button to my mega menu

[jinuralite]

Can someone help me please?

How do I add a button to my mega menu? Please see the screenshot attached for reference.

Here is the URL: https://050086.myshopify.com/ and I am using the Broadcast theme.

[RMithun]

/* Example CSS for a basic button style */
.menu-button {
display: inline-block;
padding: 10px 20px;
background-color: #your_color_here;
color: #fff;
text-decoration: none;
border-radius: 5px;
}

Can try this

[jinuralite]

Do I put this here (highlighted)? Because it didn't work.