CSS如何使背景图片位置固定且滚动内容向上？

Question

我们如何做类似于这个例子中的操作：http://theme.nileforest.com/html/mazel-v1.1/home-text-rotator1.html。他们将背景图片固定，并放置在上面的内容。我不确定他们是只用CSS实现还是使用了JavaScript。我还在尝试研究它。如果您有任何固定示例或指针，那将是一个好的开始。

- Learning

Answer 1

* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}
.block-parallax-1 {
    overflow: hidden;
    position: relative;
}
.block-parallax-1 .parallax-bg {
    background-attachment: fixed;
    background-image: url('http://bygaga.com.ua/uploads/posts/1354003535_podborka_krasivih_moto_759-58.jpg');
    background-position: 0px 0px;
    background-repeat: repeat;
    height: 100%;
    position: absolute;
    width: 100%;
    min-width: 1170px;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    background-size: cover;
}
.block-parallax-1 .md-box {
    padding: 200px 0 200px;
    background: rgba(0, 0, 0, 0.75);
    position: relative;
    height: 100%;
    text-align: center;
}
.block-parallax-1 .md-box h1 {
    color: #fff;
}

.block-parallax-2 .parallax-bg {  
 background-image: url('https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcQ_z73DvFVC1ek9ZsGdCpvpDW_AwRqOWgG6IP2wOXrVibxz_EDV');
}



h2 {
    color: #555;
    text-align: center; 
    padding: 25px 0;
    margin: 0;
}

<section class="block-parallax-1">
    <div class="parallax-bg"></div>
    <div class="md-box">
         <h1>background-attachment:fixed</h1>
    </div>
</section>
    
    <section style="min-height:400px;">
        <h2>background</h2>
 <p></p>
    </section>

<section class="block-parallax-1  block-parallax-2">
    <div class="parallax-bg"></div>
    <div class="md-box">
         <h1>background-attachment:fixed</h1>
    </div>
</section>

- Dmitriy

Answer 2

尝试添加：

#myBackgroundContainer{
    background-attachment:fixed;
}

从文档中得知：

background-attachment CSS 属性确定图像在视口内是固定的，还是随着其包含块滚动。

body  {
    background-image: url('https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcSHC-qntWkhfC_CP9UcIle2WQItuhlbFS_AGK3WdtrAc4Pp6OIu');
    background-repeat: no-repeat;
    background-attachment: fixed;
}
#Partition{
  background:gray;
  height:200px;  
}

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- AmmarCSE

Answer 3

我已经创建了一个带有 background-attachment: fixed; 的简单fiddle。

http://jsfiddle.net/afelixj/v0x5ved6/

- Felix A J