html, body {
  margin: 0;
  padding: 0;
}

* {
  box-sizing: border-box;
}

.slider {
  width: 50%;
  margin: 100px auto;
}

.slick-prev:before,
.slick-next:before {
  color: black;
}

.slick-slide {
  transition: all ease-in-out .3s;
  opacity: .2;
}

.slick-active {
  opacity: .5;
}

.slick-current {
  opacity: 1;
}

.slick-next::before,
.slick-prev::before {
  font-family: 'Material Symbols Outlined';
  font-weight: normal;
  font-style: normal;
  font-size: 24px;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  display: inline-block;
  white-space: nowrap;
  word-wrap: normal;
  direction: ltr;
  -webkit-font-feature-settings: 'liga';
  -webkit-font-smoothing: antialiased;
}

.slick-prev::before {
  content: "arrow_back_ios";
}

.slick-next::before {
  content: "arrow_forward_ios";
}

.slick-dots li button:before {
  font-family: 'Material Symbols Outlined';
  font-size: 6px;
  font-variation-settings: 'FILL' 1,  'GRAD' 0, 'opsz' 6;
  /* 上書き */
  /* position: absolute; */
  display: inline-block;
  width: 20px;
  height: 20px;
  text-align: center;
  /* 上書き */
  /* margin: 0 5px; */
  padding: 0;
  /* 上書き */
  /* cursor: pointer; */
  content: "circle";
  color: #697180;
}

.slick-dots li:hover button:before {
  font-variation-settings: 'FILL' 1,  'GRAD' 0, 'opsz' 6;
  color: #697180;
}

.slick-dots li.slick-active button:before {
  font-variation-settings: 'FILL' 1,  'GRAD' 0, 'opsz' 6;
  color: black;
}