[英]Transparent background color not working on mobile devices
On desktop we have a transparent header and footer working fine, you can see the background image: https://www.ontarioslakecountry.com/ 在桌面上我们有一个透明的页眉和页脚工作正常,你可以看到背景图像: https : //www.ontarioslakecountry.com/
However, once we go into mobile on a iOS or Android device, it shows as solid and not transparent. 但是,一旦我们在iOS或Android设备上进入移动设备,它就会显示为稳固且不透明。
.site-header { background-color: rgba(0, 84, 166, 0.5); background: rgba(0, 84, 166, 0.5); color: rgba(0, 84, 166, 0.5); }
RGBA has somewhat limited support on mobile browsers: https://caniuse.com/#search=rgba RGBA对移动浏览器的支持有限: https : //caniuse.com/#search=rgba
There are some techniques for providing fallbacks to browsers that cannot deal with the rgba values. 有一些技术可以为浏览器提供无法处理rgba值的回退。 I noticed in your site header, you have css background-color
and background
properties both using the same value. 我注意到在你的网站标题中,你有css background-color
和background
属性都使用相同的值。
One approach is to use two different background
rules with the first one set the value to a rgb
value that non-supporting browsers will use as a fallback: 一种方法是使用两个不同的background
规则,第一个将值设置为rgb
值,非支持的浏览器将用作后备:
background: rgb(0, 84, 166); /* fallback color */
background: rgba(0, 84, 166, 0.5);
There are other approaches that use filters to try and maintain the transparency on non-supporting browsers. 还有其他方法使用过滤器来尝试和维护不支持的浏览器的透明度。 Here is a good article that goes into more depth: https://css-tricks.com/rgba-browser-support/ 这是一篇更深入的文章: https : //css-tricks.com/rgba-browser-support/
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