admin, Author at Download Monitor & Manager Plugin

There are a couple of ways you can center align the download now buttons created using the download monitor plugin.

Method 1

You could wrap the download now button shortcode with a center align style code. See example below:

<div style="text-align: center;">
[download-shortcode-goes-here]
</div>

The following shortcode will show the standard download button with center alignment:

<div style="text-align: center;">
[sdm_download id="4195"]
</div>

Method 2 (Use Custom CSS)

The download now buttons has a CSS class attached to it. So you can add the following custom CSS code in your site to make the download buttons have a center alignment:

.sdm_download_link{
    text-align: center;
}

You can enter the custom CSS code in the following interface of your WordPress dashboard

Appearance -> Customize -> Additional CSS