媒体查询小于等于320px [英] media query for 320px and less

问题描述

我正在编写网页的媒体查询，并设法编写480px以上的媒体查询.但是，当我为320px编写媒体查询时，它无法正常工作.我想捕获320px的大多数手机(iphone4，iphone5，iphone3，华硕银河7，三星银河sII，三星银河s3)的纵向视图.我创建的网页正在这些设备中使用横向视图，但无法缩放为纵向视图.任何人都可以指出查询中的错误.这是我使用的媒体查询.

I am writing a media query for a web-page and managed to write media queries for 480px and more. But when I write media query for 320px it doesn't work properly. I want to capture the portrait views of most of the mobiles( iphone4, iphone5,iphone3,asus galaxy 7,samsung galaxy sII, samsung galaxy s3 ) which is 320px. The webpage I created was working with landscape views in these devices but doesnt scale for portrait views. Can anybody please point out the error in the query. This is the media queries I used.

@media (max-width: 320px)
{
   html
   {
      font-size:0.1em;
   }

}
@media (max-width: 480px)
{
   html
   {
      font-size:0.20em;
   }
}
@media (max-width: 767px)
{
   html
   {
          font-size:0.38em;
   }
}
@media (min-width: 768px) and (max-width: 979px)
   {
       html
       {
           font-size:0.65em;
       }
   }

   @media (min-width : 980px) and (max-width:1025px)
   {
       html
       {
           font-size:0.7em;
       }
   }

对于320像素，我也尝试过

For 320px I also tried with

@media only screen 
and (min-device-width : 320px) 
and (max-device-width : 480px) 
and (orientation : portrait)
{ /*Styles */}

和

@media only screen 
and (max-width : 320px) {
/* Styles */
}

但是他们都没有工作.我做错了什么/缺少什么吗? 预先感谢

But none of them is working.Am I doing anything wrong/missing something? Thanks in advance

推荐答案

由于480种样式没有最小宽度，并且由于这些样式稍后出现在样式表中，因此它们会覆盖您放在样式之前的所有内容.

Since you don't have a min-width on your 480 styles, and since those styles come later in your stylesheet, they override anything you put before them.

@media (max-width: 320px) {
   html {
      font-size:0.1em;
   }
}
@media (min-width: 321px) and (max-width: 480px) {
   html {
      font-size:0.20em;
   }
}
   ...

这篇关于媒体查询小于等于320px的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！