Transparent Bootstrap Panel

Question

I have picked this free bootstrap theme, and my problem is that I want to create transparent panels, but when I set opacity: 0.8; the text in the panel, of course, gets transparent, which is not something I would like to happen. I tried using this CSS code, but it looks like there is still something behind the heading and body and the panel doesn't get transparent.

.panel-transparent .panel-heading{
    background: rgba(122, 130, 136, 0.2)!important;
}

.panel-transparent .panel-body{
    background: rgba(46, 51, 56, 0.2)!important;
}

EDIT - Sample HTML:

<div class="panel panel-primary">
  <div class="panel-heading">
    <h3 class="panel-title">Panel primary</h3>
  </div>
  <div class="panel-body">
    Panel content
  </div>
</div>

Answer 1

CSS

    body {
        background:#c33;
    }

    .panel-transparent {
        background: none;
    }

    .panel-transparent .panel-heading{
        background: rgba(122, 130, 136, 0.2)!important;
    }

    .panel-transparent .panel-body{
        background: rgba(46, 51, 56, 0.2)!important;
    }

HTML

<div class="panel panel-primary panel-transparent">
  <div class="panel-heading">
    <h3 class="panel-title">Panel primary</h3>
  </div>
  <div class="panel-body">
    Panel content
  </div>
</div>

Example