Swiperで自動スライドしてくれない

HTML

main.html

<!-- Slider main container -->
<div class="swiper">
  <!-- Additional required wrapper -->
  <div class="swiper-wrapper">
    <!-- Slides -->
    <div class="swiper-slide">Slide 1</div>
    <div class="swiper-slide">Slide 2</div>
    <div class="swiper-slide">Slide 3</div>
    ...
  </div>
  <!-- If we need pagination -->
  <div class="swiper-pagination"></div>

  <!-- If we need navigation buttons -->
  <div class="swiper-button-prev"></div>
  <div class="swiper-button-next"></div>

  <!-- If we need scrollbar -->
  <div class="swiper-scrollbar"></div>
</div>

Swiper.js

swiper.js

const swiper = new Swiper(".swiper", {
  loop: true,
  slidesPerView: 5,
  speed: 6000,
  allowTouchMove: false,
  autoplay: { //自動スクロール
    delay: 0,
  },
});

原因

swiper-wrapperクラスやswiperクラスにcssでposition: relativeを設定しているのを無くすと動くようになった。