#slider {
  position: relative;
  overflow: hidden;
  margin: 8px 0px 0px 9px;
}

#slider ul {
  position: relative;
  margin: 0;
  padding: 0;
  height: 200px;
  list-style: none;
}

#slider ul li {
  position: relative;
  display: block;
  float: left;
  margin: 0;
  padding: 0;
  width: 493px;
  height: 319px;
}

a.control_prev, a.control_next {
  position: absolute;
  top: 50%;
  z-index: 999;
  display: block;
  padding: 2px 0px 0px 6px;
  width: 15px;
  height: 19px;
  background: #000000;
  color: #fff;
  text-decoration: none;
  font-weight: normal;
  font-size: 14px;
  opacity: 1;
  cursor: pointer;
}

a.control_prev:hover, a.control_next:hover {
  opacity: 1;
  -webkit-transition: all 0.2s ease;
}

a.control_prev {
  border-radius: 0px;
}

a.control_next {
  right: 0;
}

.slider_option {
  position: relative;
  margin: 10px auto;
  width: 160px;
  font-size: 18px;
}