Sorry, May be my tone is not good,
Question:
I am using CSS3 code of opacity background like this
Edit: (adding code)
CSS:
opecity {
   opacity:.75; 
   content:('Hello');
   background:#111 url(../img/view.png) no-repeat center;
} 
.opecity img:hover{
   -moz-opacity: 0.10;
  opacity: 0.10;
  -ms-filter:"progid:DXImageTransform.Microsoft.Alpha"(Opacity=70);
   background:#000;
}
HTML:
<div class="opecity">
  <a class="example-image-link" href="img/port1.png" data-lightbox="example-1">
     <img class="example-image" src="img/port1.png" alt="thumb-1" width="250" height="220"/>
  </a>
</div>
This code display image only, but not display content 'Hello'. But I want to display image and content together at the same time. I also concern with this
Stackoweflow.com question. 
Image and text with opacity background in the same DIV
But I don't get solution.
 
     
     
    