全幅のSlickでcenterModeにしたときに、arrowsを中央のスライドに常にくっつける方法

<!-- スライドショーのセレクタとして指定する部分 -->
<div class="js-slick-content">

  <!-- 前へのボタン -->
  <button></button>
  <!-- スライドショーの親要素 -->
  <div class="slick-slide"></div>
  <!-- 次へのボタン -->
  <button></button>

</div>

<div class="slick-content js-slick-content">
  <div class="slick-content-child-layout">
    <div class="slick-content-child">
      <div class="slick-content-child__img">
        <a href="#" class="slick-content-img">
          <img src="https://placehold.jp/600x400.png" alt="">
        </a>
      </div>
    </div>
  </div>
  <div class="slick-content-child-layout">
    <div class="slick-content-child">
      <div class="slick-content-child__img">
        <a href="#" class="slick-content-img">
          <img src="https://placehold.jp/600x400.png" alt="">
        </a>
      </div>
    </div>
  </div>
  <div class="slick-content-child-layout">
    <div class="slick-content-child">
      <div class="slick-content-child__img">
        <a href="#" class="slick-content-img">
          <img src="https://placehold.jp/600x400.png" alt="">
        </a>
      </div>
    </div>
  </div>
  <div class="slick-content-child-layout">
    <div class="slick-content-child">
      <div class="slick-content-child__img">
        <a href="#" class="slick-content-img">
          <img src="https://placehold.jp/600x400.png" alt="">
        </a>
      </div>
    </div>
  </div>
  <div class="slick-content-child-layout">
    <div class="slick-content-child">
      <div class="slick-content-child__img">
        <a href="#" class="slick-content-img">
          <img src="https://placehold.jp/600x400.png" alt="">
        </a>
      </div>
    </div>
  </div>
</div>

/* リセット */
body,html,div,img,button {
  margin: 0;
  padding: 0;
}

.slick-content {
  position: relative;
  background: #f5f5f5;
  padding: 100px 0;
}

.slick-slide {
  padding-left: 25px;
  padding-right: 25px;
}

.slick-content-child {
  background: #fff;
  padding: 15px;
}

.slick-content__img {
  width: 100%;
}

.slick-content-img {
  display: block;
  overflow: hidden;
  text-align: center;
}

.slick-content-img img {
  width: 100%;
  height: auto;
}

.slick-content-img img:hover {
  transform: scale(1.1);
  transition: .5s;

}


/* Slick Arrow */

.slide-arrow {
  width: 30px;
  height: 60px;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 999999;
  background: black;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.prev-arrow {
  left: 25.7vw;
  padding-left: 5px;
}

.next-arrow {
  right: 25.7vw;
  padding-right: 5px;
}

.slide-arrow__arrow {
  width: 12px;
  height: 12px;
  -webkit-transform: rotate(45deg);
  transform: rotate(45deg);
}

.prev-arrow__arrow {
  border-bottom: 2px solid white;
  border-left: 2px solid white;
}

.next-arrow__arrow {
  border-top: 2px solid white;
  border-right: 2px solid white;
}

$(function() {

  //Slick
  $('.js-slick-content').slick({
    arrows: true,
    prevArrow: '<button type="button" class="slide-arrow prev-arrow"><span class="slide-arrow__arrow prev-arrow__arrow"></span></button>',
    nextArrow: '<button type="button" class="slide-arrow next-arrow"><span class="slide-arrow__arrow next-arrow__arrow"></span></button>',
    dots: false,
    autoplay: false,
    autoplaySpeed: 4000,
    speed: 1000,
    pauseOnFocus: false,
    pauseOnHover: false,
    swipe: true,
    swipeToSlide: true,
    centerMode: true,
    centerPadding: '25vw',//ポイント！！！
    slidesToShow: 1,
    slidesToScroll: 1,
  });
});