.rslides {
  margin: 0 auto 0px;
  }

.events {
  list-style: none;
  }

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

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

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

.callbacks img {
  display: block;
  position: relative;
  z-index: 1;
  height: auto;
  width: 100%;
  border: 0;
  }

.callbacks_nav {
  position: absolute;
  -webkit-tap-highlight-color: rgba(0,0,0,0);
  bottom: 20px;
  left: 20px;
  opacity: 0.7;
  z-index: 3;
  text-indent: -9999px;
  overflow: hidden;
  text-decoration: none;
  height: 60px;
  width: 60px;
  background: transparent url("themes/themes.png") no-repeat left top;
  margin-top: -45px;
  background-size: 120px 60px;
}

.callbacks_nav:hover {
  opacity: 0.85;
}

.callbacks_nav:active {
  opacity: 1.0;
}

.callbacks_nav.next {
  left: auto;
  background-position: right top;
  right: 20px;
}

@media screen and (max-width: 600px) {
  .callbacks_nav {
  bottom: 10px;
  left: 10px;
  height: 40px;
  width: 40px; 
  background-size: 80px 40px;
}
.callbacks_nav.next {
  right: 10px;
}
}