body {
  margin: 0;
  font-family: sans-serif;
  background: #f0f0f0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.slider {
  width: 80%;
  max-width: 600px;
  position: relative;
  overflow: hidden;
  border: 4px solid #333;
  background: white;
}

.slides {
  display: flex;
  width: 300%;
  transition: 0.5s;
}

.slide {
  width: 100%;
  flex-shrink: 0;
}

.slide img {
  width: 100%;
  display: block;
}

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

#slide1:checked ~ .slides { margin-left: 0%; }
#slide2:checked ~ .slides { margin-left: -100%; }
#slide3:checked ~ .slides { margin-left: -200%; }

.navigation {
  position: absolute;
  width: 100%;
  bottom: 15px;
  display: flex;
  justify-content: center;
  gap: 10px;
}

.nav {
  cursor: pointer;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: #999;
  display: inline-block;
  transition: background 0.3s;
}

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

.prevnext {
  position: absolute;
  top: 50%;
  width: 100%;
  display: flex;
  justify-content: space-between;
  transform: translateY(-50%);
  pointer-events: none;
}

.prevnext label {
  pointer-events: all;
  font-size: 2em;
  padding: 10px;
  background: rgba(255, 255, 255, 0.7);
  cursor: pointer;
}