How to display the background image behind heading text?

I have an image strip and I have to display that image as a background of my heading.

I tried but I am getting one issue and the issue is, the first edge and last edge are not displaying properly. I mean starting image and end images are not displaying properly. Also, image border displaying straight.

.red_strip {
  background-image: url('http://www.hgsitebuilder.com/files/writeable/uploads/basekit-template-images/hostgator443_hostgator574_headergreenbgpaint.png');
  background-size: cover;
  background-repeat: repeat;
  background-position: center;
  width: 100%;
}

<div class="heading">
  <h2>Lorem ipsum dolor sit amet, consectetur adipisicing<br /> elit, sed do eiusmod tempor incididunt ut <span class="red_strip">labore et dolore magna aliqua.</span></h2>


  <h2>Lorem ipsum dolor sit amet, consectetur adipisicing<br /> elit, sed do eiusmod <span class="red_strip">tempor incididunt ut labore et dolore magna aliqua.</span></h2>

  <h2>Lorem ipsum dolor sit amet, consectetur adipisicing<br /><span class="red_strip"> elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</span></h2>


</div>

Solution

Update red_strip class as

.red_strip {
  background-image: url(http://www.hgsitebuilder.com/files/writeable/uploads/basekit-template-images/hostgator443_hostgator574_headergreenbgpaint.png);
  background-size: 100% 100%;
  background-repeat: no-repeat;
}

background-size: 100% 100%; property will stretch the background image horizontally and vertically

.red_strip {
  background-image: url(http://www.hgsitebuilder.com/files/writeable/uploads/basekit-template-images/hostgator443_hostgator574_headergreenbgpaint.png);
  background-size: 100% 100%;
  background-repeat: no-repeat;
}

<div class="heading">
  <h2>Lorem ipsum dolor sit amet, consectetur adipisicing<br /> elit, sed do eiusmod tempor incididunt ut <span class="red_strip">labore et dolore magna aliqua.</span></h2>
  <h2>Lorem ipsum dolor sit amet, consectetur adipisicing<br /> elit, sed do eiusmod <span class="red_strip">tempor incididunt ut labore et dolore magna aliqua.</span></h2>
  <h2>Lorem ipsum dolor sit amet, consectetur adipisicing<br /><span class="red_strip"> elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</span></h2>
</div>