.slider {
  position: relative;
  overflow: hidden;
  margin: 0 auto 1em auto;
  border-radius: 0px;
  border: 1px solid #e7e7e7;
}

.slider ul {
  position: relative;
  margin: 0;
  padding: 0; 
  list-style: none;
}

.slider ul li {
  position: relative;
  display: block;
  float: left;
  margin: 0;
  padding: 0;
  width: 100%;
  background: white;
  color: #111;
  text-align: center;
  line-height: 2.1em;
  background-repeat: no-repeat;
  background-size: 100% auto;
}

.slider ul li span {
  height: 2em;
}
.slider ul li img {
    width: 100%;
    padding: 0;
    margin: 0;
}

.slider a.control_prev, .slider a.control_next {
  position: absolute;
  top: 0;
  z-index: 5;
  display: block;
  padding: .2em 1em;
  width: auto;
  height: 2em;
  background: #e7e7e7;
  color: #111;
  text-decoration: none;
  font-size: 1em;
  opacity: 0.8;
  cursor: pointer;
}

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

.slider a.control_prev {
  border-radius: 0 2px 2px 0;
}

.slider a.control_next {
  right: 0;
  border-radius: 2px 0 0 2px;
}