body {
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-size: 12px;
  color: #393939;
  text-align: center;
}

* {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  -ms-box-sizing: border-box;
  box-sizing: border-box;
}

#slider {
  max-width: 600px;
  text-align: center;
  margin: 0 auto;
}

#overflow {
  width: 100%;
  overflow: hidden;
}

#slides .inner {
  width: 400%;
}

#slides .inner {
  -webkit-transform: translateZ(0);
  -moz-transform: translateZ(0);
  -o-transform: translateZ(0);
  -ms-transform: translateZ(0);
  transform: translateZ(0);

  -webkit-transition: all 800ms cubic-bezier(0.770, 0.000, 0.175, 1.000);
  -moz-transition: all 800ms cubic-bezier(0.770, 0.000, 0.175, 1.000);
  -o-transition: all 800ms cubic-bezier(0.770, 0.000, 0.175, 1.000);
  -ms-transition: all 800ms cubic-bezier(0.770, 0.000, 0.175, 1.000);
  transition: all 800ms cubic-bezier(0.770, 0.000, 0.175, 1.000);

  -webkit-transition-timing-function: cubic-bezier(0.770, 0.000, 0.175, 1.000);
  -moz-transition-timing-function: cubic-bezier(0.770, 0.000, 0.175, 1.000);
  -o-transition-timing-function: cubic-bezier(0.770, 0.000, 0.175, 1.000);
  -ms-transition-timing-function: cubic-bezier(0.770, 0.000, 0.175, 1.000);
  transition-timing-function: cubic-bezier(0.770, 0.000, 0.175, 1.000);
}

#slides article {
  width: 25%;
  float: left;
}

#slide1:checked ~ #slides .inner {
  margin-left: 0;
}

#slide2:checked ~ #slides .inner {
  margin-left: -100%;
}

#slide3:checked ~ #slides .inner {
  margin-left: -200%;
}

#slide4:checked ~ #slides .inner {
  margin-left: -300%;
}

input[type="radio"] {
  display: none;
}

label {
  background: #CCC;
  display: inline-block;
  cursor: pointer;
  width: 10px;
  height: 10px;
  border-radius: 5px;
}

#slide1:checked ~ label[for="slide1"],
#slide2:checked ~ label[for="slide2"],
#slide3:checked ~ label[for="slide3"],
#slide4:checked ~ label[for="slide4"] {
  background: #333;
}