.slider {
  position: relative;
  max-width: 100%;
  width: 100dvw;
  height: 400px;
  margin: auto;
  overflow: hidden;
}

.slider .slider-list {
  position: absolute;
  top: 0;
  left: 0;
  display: flex;
  width: max-content;
  height: 100%;
  transition: all 1200ms ease;
}

.slider .slider-list img {
  max-width: 100%;
  width: 100dvw;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.slider-btns {
  position: absolute;
  top: 45%;
  left: 5%;
  width: 90%;
  display: flex;
  justify-content: space-between;
}

.slider-btns button {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: #33333380;
  color: #efefef;
  border: none;
  font-family: monospace;
  font-weight: bold;
  cursor: pointer;
}

.slider-btns button:active {
  transform: scale(0.9);
}

.dots {
  position: absolute;
  bottom: 0.625rem;
  color: #fff;
  left: 0;
  width: 100%;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
}

.dots li {
  list-style: none;
  width: 0.75rem;
  height: 0.75rem;
  background: #cccccc80;
  border-radius: 0.75rem;
  margin: 1.25rem;
  transition: all 500ms linear;
  cursor: pointer;
}

.dots li.active {
  width: 3.125rem;
}

/* 側邊欄隱藏後，原先圖片只設定 max-width: 89.9%，會有空白區塊 */
@media screen and (max-width: 1200px) {
  .slider .slider-list img {
    max-width: 100%;
  }
}

@media screen and (max-width: 768px) {
  .slider {
    height: 250px;
  }

  .slider .slider-list img {
    max-width: 100%;
  }

  .dots li {
    width: 0.625rem;
    height: 0.625rem;
    border-radius: 0.625rem;
  }
}
@keyframes slider_ani {
  from {
    opacity: 0;
    transform: translateX(-10px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}
.slider_ani {
  animation-iteration-count: infinite;
  animation: slider_ani 0.8s ease-out;
}