.callbacks {
  position: relative;
  float: left;
  width: 100%;
  }

 .callbacks {
  position: relative;
  list-style: none;
  overflow: hidden;
  width: 100%;
  padding: 0;
  margin: 0;
  /*z-index: 0;*/
  }

 .callbacks li {
  position: absolute;
  width: 100%;
  left: 0;
  top: 0;
  }

 .callbacks img {
  display: block;
  position: relative;
  /*z-index: 0;*/
  height: auto;
  width: 100%;
  border: 0;
  }

 .callbacks .caption {
  display: block;
  position: absolute;
  /*z-index: 1;*/
  font-size: 24px;
  font-weight: 800;
  text-shadow: none;
  color: black;
  background: rgba(255,255,255, .6);
  left: 100px;
  right: 0;
  top: 20%;
  padding: 10px 20px;
  margin: 0;
  border-radius : 10px;
  max-width: 200px;
  }

 .callbacks_nav {
  position: absolute;
  -webkit-tap-highlight-color: rgba(0,0,0,0);
  top: 58%;
  left: 16px;
  opacity: 0.7;
  z-index: 410;
  text-indent: -9999px;
  overflow: hidden;
  text-decoration: none;
  height: 31px;
  width: 19px;
  background: transparent url("../images/themes_sm.gif") no-repeat left top;
  margin-top: -45px;
  }

 .callbacks_nav:active {
  opacity: 1.0;
  }

 .callbacks_nav.next {
  left: auto;
  background-position: right top;
  right: 16px;
  }
/* Portrait tablet to landscape and desktop */
  @media (max-width: 979px) and (min-width: 768px) {

 .callbacks .caption {
  font-size: 14px;
  left: 30px;
  max-width: 120px;
  padding: 5px 5px;
  }
 .callbacks_nav {
  top: 60%;
 }
}

/* Landscape phone to portrait tablet */
@media (max-width: 767px) {
 .callbacks .caption {
  font-size: 14px;
  left: 30px;
  max-width: 120px;
  padding: 5px 5px;
  }	
 .callbacks_nav {
  top: 70%;
 }
} 
}