.callbacks_container {
  margin-bottom: 0px;
  position: relative;
  float: left;
  width: 100%;
  }

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

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

 

.callbacks_nav {
  position: absolute;
  -webkit-tap-highlight-color: rgba(0,0,0,0);
  top: 52%;
  left: 0;
  opacity: 0.7;
  z-index: 3;
  text-indent: -9999px;
  overflow: hidden;
  text-decoration: none;
  height: 61px;
  width: 38px;
  background: transparent url("images/themes.gif") no-repeat left top;
  margin-top: -45px;
  }

.callbacks_nav:active {
  opacity: 1.0;
  }

.callbacks_nav.next {
  left: auto;
  background-position: right top;
  right: 0;
  }
 

@media screen and (max-width: 600px) {
  
  .callbacks_nav {
    top: 47%;
    }
  }
@media only screen and (min-width: 240px) and (max-width: 479px) {
	.callbacks_nav { 
		left: 56px; 
	}

	.callbacks_nav.next { 
		right: 40px;
	}
}
@media screen and (max-width: 480px) {
	.callbacks_nav { 
		left: 81px; 
	}

	.callbacks_nav.next { 
		right: 52px;
	}
}