how to add same class property in css code example
Example: html specific class color
<!-- in the head element -->
<style> h1 { color:blue; } </style>
<!-- in the body element -->
<h1> text in blue because all "h1" element is in blue </h1>
<!-- in the head element -->
<style> h1 { color:blue; } </style>
<!-- in the body element -->
<h1> text in blue because all "h1" element is in blue </h1>