html, body, ul, li {
  margin: 0;
  padding: 0;
}

li { list-style: none; }

a { text-decoration: none; }

.carousel {
  max-width: 980px;
  height: 400px;
  margin: 30px auto;
  overflow: hidden;
  position: relative;
}

.ct { position: relative; }

.ct img {
  height: 400px;
  width: 980px;
}

.ct li { float: left; }

.bullet {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: 10px;
}

.bullet li {
  height: 5px;
  width: 30px;
  border-radius: 5px;
  background-color: #fff;
  display: inline-block;
  margin-right: 10px;
  cursor: pointer;
}

.active { opacity: 0.5; }

.arrow {
  color: rgba(255,255,255,0.3);
  font-size: 80px;
  position: absolute;
  top: 40%;
}

.arrow:hover { color: rgba(255,255,255,0.9); }

.pre { left: 0; }

.next { right: 0; }

.clearfix:after {
  content: "";
  display: block;
  clear: both;
}