概要

Swiperのswiper-buttonを横に出すのに少しハマったのでメモ。
環境 : Swiper 3.4.0

ノーマルなやつ

<div class="swiper-container">
  <div class="swiper-wrapper">
      <div class="swiper-slide"></div>
      <div class="swiper-slide"></div>
      <div class="swiper-slide"></div>
  </div>
  <div class="swiper-button-prev"></div>
  <div class="swiper-button-next"></div>  
</div>

.swiper-container{
  width: 700px;
  height: 220px;
  margin: 100px 100px 0;
  padding: 10px;
  border: 1px solid #ccc;
}
.swiper-slide{
  background: red;
}

以下jsは共通。

横に出したやつ
コツはswiper-button-hogeをswiper-containerと並べるとこ？

<div class="swiper-custom-parent">
  <div class="swiper-container">
    <div class="swiper-wrapper">
        <div class="swiper-slide"></div>
        <div class="swiper-slide"></div>
        <div class="swiper-slide"></div>
    </div>
  </div>
  <div class="swiper-button-prev"></div>
  <div class="swiper-button-next"></div>  
</div>

.swiper-custom-parent{
  border: 1px solid #ccc;
  margin: 100px 100px 0;
  width: 800px;
  position: relative;
}
.swiper-container{
  width: 700px;
  height: 220px;
  padding: 10px;
}
.swiper-slide{
  background: red;
}

var swiper1 = new Swiper ('.swiper-container', {
  loop: true,
  nextButton: '.swiper-button-next',
  prevButton: '.swiper-button-prev',
  centeredSlides: true,
  paginationClickable: true,
  slidesPerView: 3,
  spaceBetween: 20,
});

ついでにFontAwesomeボタンのデザイン変更とか
swiper-button-hoge以外のclassをボタンにしようとするとスライドしなくなっちゃうので注意。

<div class="swiper-custom-parent">
  <div class="swiper-container">
    <div class="swiper-wrapper">
        <div class="swiper-slide"></div>
        <div class="swiper-slide"></div>
        <div class="swiper-slide"></div>
    </div>
  </div>
  <div class="swiper-button-prev swiper-custom-button">
    <i class="fa fa-angle-left"></i>
  </div>
  <div class="swiper-button-next swiper-custom-button">
    <i class="fa fa-angle-right"></i>
  </div>  
</div>

.swiper-custom-parent{
  border: 1px solid #ccc;
  margin: 100px 100px 0;
  width: 800px;
  position: relative;
}
.swiper-container{
  width: 700px;
  height: 220px;
  padding: 10px;
}
.swiper-slide{
  background: red;
}
.swiper-custom-button{
  background-image: none !important;
  background: blue;
  color: white;
  font-size: 36px;
  text-align: center;
  width: 24px !important;
  height: 64px !important;
  line-height: 64px;
}
.swiper-custom-button .fa{
  line-height: 62px;
}