css background-size：包含在 IOS 上被忽略的内容？

Question

我在我的网站上使用stellar.js。这适用于所有设备和浏览器，iOS Safari 除外。

您可以在此处找到此错误的示例：http://www.pencilscoop.com/demos/Parallax_Project/Part1/index.html 在 iPhone Slide 7/8 上看起来像这样（background-size: cover; 没有被覆盖，其他 bg 根本没有显示）：

我尝试了不同的 css 属性，例如 background-position: center center、background-size: 620px 230px;、background-size: contain; 等等，但它们都不起作用。有人知道如何在 iOS Safari 中包含 bg-image 吗？

Answer 1

好的，我终于找到了在 iOS 设备上修复它的解决方案：

.slide {        
    -webkit-background-size: contain;
    -moz-background-size: contain;
    -o-background-size: contain;
    background-size: contain;

    background-origin: content-box;
    -moz-background-origin: content;
    -webkit-background-origin: content-box;     
}

@media 
  /* ----------- iPhone 4 and 4S ----------- */
  only screen 
  and (min-device-width: 320px) 
  and (max-device-width: 480px)
  and (-webkit-min-device-pixel-ratio: 2),
  /* ----------- iPhone 5 and 5S ----------- */
  only screen 
  and (min-device-width: 320px) 
  and (max-device-width: 568px)
  and (-webkit-min-device-pixel-ratio: 2),
  /* ----------- iPhone 6 ----------- */
  only screen 
  and (min-device-width: 375px) 
  and (max-device-width: 667px) 
  and (-webkit-min-device-pixel-ratio: 2),
  /* ----------- iPhone 6+ ----------- */
  only screen 
  and (min-device-width: 414px) 
  and (max-device-width: 736px) 
  and (-webkit-min-device-pixel-ratio: 3),
  /* ----------- iPad mini ----------- */
  only screen 
  and (min-device-width: 768px) 
  and (max-device-width: 1024px) 
  and (-webkit-min-device-pixel-ratio: 1),
  /* ----------- iPad 1 and 2 ----------- */
  only screen 
  and (min-device-width: 768px) 
  and (max-device-width: 1024px) 
  and (-webkit-min-device-pixel-ratio: 1),
  /* ----------- iPad 3 and 4 ----------- */
  only screen 
  and (min-device-width: 768px) 
  and (max-device-width: 1024px) 
  and (-webkit-min-device-pixel-ratio: 2) {
    .slide {
        background-attachment: scroll;
    }
}