图像顶部的光滑滑块文本

我正在尝试制作一个非常正常的轮播，在垂直中间的两侧有两个箭头，在图像顶部的中间有一个按钮的文本。尽管箭头和文本都是绝对的并且具有更高的 z-index，但我无法让任何内容出现在图像顶部。这是带有我的代码的代码笔。http://codepen.io/kathryncrawford/pen/AXmVAz

这是我的 HTML

<div class="slick-slider">
    <div>
        <img class="img-fluid" src="http://www.placecage.com/1500/750" alt="">
        <div class="info">
        <h1 class="slider-heading">Heading</h1>
            <p class="slider-subheading lead">Subheading</p>
            <a class="btn btn-large btn-danger" href="">button text</a>
        <p class="down-arrow">
            <a class="btn btn-large btn-down-arrow" href="#theend">
                <i class="fa fa-chevron-down fa-lg" aria-hidden="true"></i>
            </a>
        </p>
        </div>
    </div>
    <div>
        <img class="img-fluid" src="http://www.placecage.com/1500/750" alt="">
    </div>
    <div>
        <img class="img-fluid" src="http://www.placecage.com/1500/750" alt="">
    </div>
</div>

我的CSS（这里不包含slick css，但它在codepen中）

  .slick-slider img { /* keep images full screen */
    width: 100%;
  }

  .chevron-container { /* full slider height container for chevrons */
    height: 100%;
    position: absolute;
    width: 100px;
  }

  .slick-right { /* keeps right arrow to the right */
    right: 0;
    top: 0;
  }

  .chevron-container > .fa { /* positions chevrons in vertical center */
    bottom: 0;
    color: white;
    font-size: 10em;
    height: 1em;
    margin: auto;
    position: absolute;
    top: 0;
    width: 5em;
    z-index: 10;
  }

  .slick-slider .info {
    color: white;
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    line-height: 100vh;
    text-align: center;
    z-index: 10;
  }

  .slick-slider .info > div {
    display: inline-block !important;
    vertical-align: middle;
  }

还有我的JS

jQuery(function($){
  $('.slick-slider').slick({
    accessibility: true,
    adaptiveHeight: true,
    arrows: true,
    infinite: true,
    mobileFirst: true,
    nextArrow: '<div class="chevron-container slick-right"><i class="fa fa-chevron-right" aria-hidden="true"></i></span><span class="sr-only">Next</span></div>',
    prevArrow: '<div class="chevron-container"><i class="fa fa-chevron-left" aria-hidden="true"></i></span><span class="sr-only">Previous</span></div>',
    slidesToShow: 1
  });
});

你必须做

.slick-slide {
    /* ... */
    position: relative;
}

所以这样.infostuff 知道它应该绝对定位到它的父级。