javascript - Swiper js - How can i change the background color of the selected slide

var swiper = new Swiper(".swiper", {
  slidesPerView: 3,
  loop: true,
  spaceBetween: 30,
  pagination: {
    el: ".swiper-pagination",
    clickable: true,
  },
});Copy code

.swiper-slide.swiper-slide-active{
  background: red;
}
html,
body {
  position: relative;
  height: 100%;
}

body {
  background: #eee;
  font-family: Helvetica Neue, Helvetica, Arial, sans-serif;
  font-size: 14px;
  color: #000;
  margin: 0;
  padding: 0;
}

.swiper {
  width: 100%;
  height: 100%;
}

.swiper-slide {
  text-align: center;
  font-size: 18px;
  background: #fff;

  /* Center slide text vertically */
  display: -webkit-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  -webkit-justify-content: center;
  justify-content: center;
  -webkit-box-align: center;
  -ms-flex-align: center;
  -webkit-align-items: center;
  align-items: center;
}

.swiper-slide img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

[scroll]{
  min-height: 100vh;
  background: gray;
}Copy code

<script src="https://cdn.jsdelivr.net/npm/swiper@8/swiper-bundle.min.js"></script>
<link href="https://cdn.jsdelivr.net/npm/swiper@8/swiper-bundle.min.css" rel="stylesheet"/>

<div class="swiper mySwiper">
  <div class="swiper-wrapper">
    <div class="swiper-slide">Slide 1</div>
    <div class="swiper-slide">Slide 2</div>    
    <div class="swiper-slide">Slide 3</div>
    <div class="swiper-slide">Slide 4</div>
  </div>
  <div class="swiper-pagination"></div>
</div>Copy code