body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f4f4f4;
}

.slider-container {
  position: relative;
  width: 100%;
  max-width: 400px; /* スマホ用に幅を制限 */
  margin: 20px auto;
  overflow: hidden;
  border: 2px solid #ddd;
  border-radius: 8px;
}

.slider {
  display: flex;
  transition: transform 0.5s ease-in-out;
}

.slide {
  flex: 0 0 100%;
  box-sizing: border-box;
}

.slide img {
  width: 100%;
  display: block;
  border-radius: 8px;
}