Slider.css

.slider div,
.slider ul,
.slider li,
.slider a,
.slider button,
.slider img {
  padding: 0;
  margin: 0;
}
.slider li {
  list-style: none;
}
.slider button {
  outline: 0;
}

.slider {
  position: relative;
  max-width: 300px;
  margin: 0 auto;
}
.slider .slide-viewer {
  overflow: hidden;
  height: 300px;
}
.slider .slide-group {
  position: relative;
  width: 100%;
  height: 100%;
}
.slider .slide {
  position: absolute;
  display: none;
  width: 100%;
  height: 100%;
}
.slider .slide:first-child {
  display: block;
}

.slider .slide-btn {
  position: absolute;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  text-align: center;
  line-height: 30px;
  background-color: #fff;
  opacity: .1;
  cursor: pointer;
}
.slider .slide-btn:hover {
  opacity: .3;
}
.slider .slide-btn.slide-btn-prev {
  left: 5px; top: 50%;
  margin-top: -15px;
}
.slider .slide-btn.slide-btn-next {
  right: 5px; top: 50%;
  margin-top: -15px;
}

.slider .slide-bullets {
  position: absolute;
  bottom: 5px;
  width: 100%;
  height: 16px;
  text-align: center;
}
.slider .slide-bullets > .slide-bullet {
  padding: 0 5px;
  border: none;
  background: none;
  font-size: 32px;
  line-height: .5;
  color: #fff;
  cursor: pointer;
}
.slide-bullets > .slide-bullet.active,
.slide-bullets > .slide-bullet:hover {
  color: darkslateblue;
}