Wordpress grid card style

How to customize wordpress to show posts as grid card style like this:

Note that I am using the theme called VW Mobile App

Install the plugin called The Post Grid by Radius Theme.

Then customize the background color of the button to blue and the button text color to white.

Then customize the css for h1 tag for the VW Mobile App:

h1 { 

  display: block;

  font-size: 2em !important; 

  margin-top: 0.67em;

  margin-bottom: 0.67em;

  margin-left: 0;

  margin-right: 0;

  font-weight: normal !important;

}

h2 {

  display: block;

  font-size: 1.5em !important;

  margin-top: 0.83em;

  margin-bottom: 0.83em;

  margin-left: 0;

  margin-right: 0;

  font-weight: normal !important;

}