如何在滚动到视点的视差部分底部下方的屏幕外立即添加内容？

如何解决如何在滚动到视点的视差部分底部下方的屏幕外立即添加内容？

这里有一个非常酷的视差效果：

https://codepen.io/samdbeckham/pen/OPXPNp

<div class="parallax">
    <div class="parallax__layer parallax__layer__0">
        <img src="https://github.com/samdbeckham/blog/blob/master/dev/_assets/images/articles/firewatch/layer_0.png?raw=true" />
    </div>
    <div class="parallax__layer parallax__layer__1">
        <img src="https://github.com/samdbeckham/blog/blob/master/dev/_assets/images/articles/firewatch/layer_1.png?raw=true" />
    </div>
    <div class="parallax__layer parallax__layer__2">
        <img src="https://github.com/samdbeckham/blog/blob/master/dev/_assets/images/articles/firewatch/layer_2.png?raw=true" />
    </div>
    <div class="parallax__layer parallax__layer__3">
        <img src="https://github.com/samdbeckham/blog/blob/master/dev/_assets/images/articles/firewatch/layer_3.png?raw=true" />
    </div>
    <div class="parallax__layer parallax__layer__4">
        <img src="https://github.com/samdbeckham/blog/blob/master/dev/_assets/images/articles/firewatch/layer_4.png?raw=true" />
    </div>
    <div class="parallax__layer parallax__layer__5">
        <img src="https://github.com/samdbeckham/blog/blob/master/dev/_assets/images/articles/firewatch/layer_5.png?raw=true" />
    </div>
    <div class="parallax__layer parallax__layer__6">
        <img src="https://github.com/samdbeckham/blog/blob/master/dev/_assets/images/articles/firewatch/layer_6.png?raw=true" />
    </div>
    <div class="parallax__cover"></div>
</div>
foo bar baz

* {
  Box-sizing: border-Box;
}

html,body {
  background-color: #FEDCC8;
}

.parallax {
  -webkit-perspective: 100px;
          perspective: 100px;
  height: 100vh;
  overflow-x: hidden;
  overflow-y: auto;
  position: absolute;
  top: 0;
  left: 50%;
  right: 0;
  bottom: 0;
  margin-left: -1500px;
}

.parallax__layer {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
}
.parallax__layer img {
  display: block;
  position: absolute;
  bottom: 0;
}

.parallax__cover {
  background: #2D112B;
  display: block;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: 2000px;
  z-index: 2;
}

.parallax__layer__0 {
  -webkit-transform: translateZ(-300px) scale(4);
          transform: translateZ(-300px) scale(4);
}

.parallax__layer__1 {
  -webkit-transform: translateZ(-250px) scale(3.5);
          transform: translateZ(-250px) scale(3.5);
}

.parallax__layer__2 {
  -webkit-transform: translateZ(-200px) scale(3);
          transform: translateZ(-200px) scale(3);
}

.parallax__layer__3 {
  -webkit-transform: translateZ(-150px) scale(2.5);
          transform: translateZ(-150px) scale(2.5);
}

.parallax__layer__4 {
  -webkit-transform: translateZ(-100px) scale(2);
          transform: translateZ(-100px) scale(2);
}

.parallax__layer__5 {
  -webkit-transform: translateZ(-50px) scale(1.5);
          transform: translateZ(-50px) scale(1.5);
}

.parallax__layer__6 {
  -webkit-transform: translateZ(0px) scale(1);
          transform: translateZ(0px) scale(1);
}

但是在HTML底部添加的所有文本都呈现在页面顶部，并且不会随着视差滚动。

当用户向下滚动时，如何使内容从页面下方滚动到视图中？

解决方法

解决方案是将内容放置在div.parallax__cover内，然后将所有margin-left和left更改为0。