how to color background image css code example

Example 1: how to change background image in css

<style>
body{
  background-image: url('img_girl.jpg');
}
</style>

Example 2: background url with color css

background: linear-gradient(0deg, rgba(2,173,231,0.5), rgba(2,173,231,0.5)), url(images/mba-grid-5px-bg.png) repeat;