.slide {
  position: relative;
  margin-left: 100px auto;
  margin-right: 100px auto; 
  margin-bottom: 100px auto;
  margin-top: 10px; 
  width: 60%;
  height: 450px;
  background: #ccc;
}

.slide ul li {
  position: absolute;
  left: 0;
  top: 0;
  display: block;
  width: 100%;
  height: 100%;
  list-style: none;
}

.slide .dots {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 20px;
  width: 100%;
  z-index: 3;
  text-align: center;
}

.slide .dots li {
  display: inline-block;
  margin: 0 10px;
	width: 10px;
	height: 10px;
	border: 2px solid #fff;
	border-radius: 50%;
  opacity: 0.4;
	cursor: pointer;
	transition: background .5s, opacity .5s;
  list-style: none;
}

.slide .dots li.active {
  background: #fff;
	opacity: 1;
}

.slide .arrow {
  position: absolute;
  z-index: 2;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transition: background .5s, opacity .5s;
}

.slide .arrow .arrow-left,
.slide .arrow .arrow-right {
  position: absolute;
  top: 50%;
  margin-top: -25px;
  display: block;
  width: 50px;
  height: 50px;
  cursor: pointer;
  opacity: 0.5;
	transition: background .5s, opacity .5s;
}

.slide .arrow  .arrow-left:hover,
.slide .arrow  .arrow-right:hover {
  opacity: 1;
}

.slide .arrow .arrow-left {
  left: 20px;
  background: url("../img/arrow-left.png");
}

.slide .arrow .arrow-right {
  right: 20px;
  background: url("../img/arrow-right.png");
}