.slider {
  position: relative;
  width: 90%;
  max-width: 800px;
  height: 550px;
  border-radius: 10px;
  overflow: hidden;
  margin: 30px 0px;
}

.slides {
  width: 500%;
  height: 550px;
  display: flex;
}

.slides .hidden-radio {
  width: 0;
  height: 0;
}

.slide-img {
  width: 20%;
  position: relative;
  transition: 1s;
}

.slide-img img {
  width: 800px;
  min-height: 100%;
  overflow: hidden;
}

.navigation-manual {
  position: relative;
  width: 100%;
  max-width: 800px;
  margin-top: -30px;
  display: flex;
  justify-content: center;
}

.btn-manual {
  border: 2px solid #fff;
  padding: 6px;
  border-radius: 50%;
  cursor: pointer;
  transition: 0.5s;
}

.btn-manual:hover {
  background-color: #fff;
}

.btn-manual:not(:last-child) {
  margin-right: 40px;
}

#radio-image1:checked ~ .first {
  margin-left: 0;
}

#radio-image2:checked ~ .first {
  margin-left: -20%;
}

#radio-image3:checked ~ .first {
  margin-left: -40%;
}

#radio-image4:checked ~ .first {
  margin-left: -60%;
}

#radio-image5:checked ~ .first {
  margin-left: -80%;
}

.btn-auto {
  border: 2px solid #fff;
  padding: 6px;
  border-radius: 50%;
}

.btn-auto:not(:last-child) {
  margin-right: 40px;
}

.navigation-auto {
  position: absolute;
  width: 100%;
  max-width: 800px;
  margin-top: 520px;
  display: flex;
  justify-content: center;
}

#radio-image1:checked ~ .navigation-auto .btn-auto.-one {
  background-color: #fff;
}

#radio-image2:checked ~ .navigation-auto .btn-auto.-two {
  background-color: #fff;
}

#radio-image3:checked ~ .navigation-auto .btn-auto.-three {
  background-color: #fff;
}

#radio-image4:checked ~ .navigation-auto .btn-auto.-four {
  background-color: #fff;
}

#radio-image5:checked ~ .navigation-auto .btn-auto.-five {
  background-color: #fff;
}

@media (max-width: 500px) {
  .slider,
  .slides,
  .navigation-auto {
    max-height: 300px;
  }

  .slide-img img {
    width: 100%;
  }

  .navigation-auto {
    margin-top: 270px;
  }
}