当汉堡包菜单点击Saf时放大背景图片

问题描述:

我正在为一个乐队制作一个简单的网站。你可以查看它here。在桌面版上,一切都很好,但在我的iPhone上,点击汉堡菜单后,背景图放大。我假设这是因为页面的高度在打开菜单时发生变化,导致网站调整页面的高度以容纳额外的内容。我希望移动网站的行为与桌面版网站相同:背景是一个不重复的固定封面。这是我的第一个项目,所以任何帮助/建设性的意见将不胜感激!当汉堡包菜单点击Saf时放大背景图片

html { 
 
    background: url(264H.jpg) no-repeat center center fixed; 
 
    -webkit-background-size: cover; 
 
    -moz-background-size: cover; 
 
    -o-background-size: cover; 
 
    background-size: cover; 
 
} 
 

 
body { 
 
    margin: 0; 
 
    font-family: Futura, sans-serif; 
 
} 
 

 
ul.topnav { 
 
    list-style-type: none; 
 
    margin: 0; 
 
    padding: 0; 
 
    overflow: hidden; 
 
    background-color: transparent; 
 
} 
 

 
ul.topnav li { 
 
    float: left; 
 
} 
 

 
ul.topnav li a { 
 
    display: inline-block; 
 
    color: #FFF; 
 
    text-align: center; 
 
    padding: 14px 16px; 
 
    text-decoration: none; 
 
    transition: 0.3s; 
 
    font-size: 17px; 
 
} 
 

 
ul.topnav li a:hover { 
 
    background-color: #555; 
 
} 
 

 
ul.topnav li.icon { 
 
    display: none; 
 
} 
 

 
@media screen and (max-width:680px) { 
 
    ul.topnav li:not(:first-child) { 
 
    display: none; 
 
    } 
 
    ul.topnav li.icon { 
 
    float: right; 
 
    display: inline-block; 
 
    } 
 
} 
 

 
@media screen and (max-width:680px) { 
 
    ul.topnav.responsive { 
 
    position: relative; 
 
    } 
 
    ul.topnav.responsive li.icon { 
 
    position: absolute; 
 
    right: 0; 
 
    top: 0; 
 
    } 
 
    ul.topnav.responsive li { 
 
    float: none; 
 
    display: inline; 
 
    } 
 
    ul.topnav.responsive li a { 
 
    display: block; 
 
    text-align: left; 
 
    } 
 
} 
 

 
.parent { 
 
    margin: 0 auto; 
 
    width: 75%; 
 
    background-color: white; 
 
    border: 2px solid black; 
 
    background-color: rgba(255, 255, 255, 0.5) 
 
} 
 

 
.child { 
 
    width: 75%; 
 
    padding: 3px; 
 
    border: 1px solid black; 
 
    margin: .5em auto; 
 
} 
 

 
.video-container { 
 
    height: 0; 
 
    overflow: hidden; 
 
    padding-bottom: 56.25%; 
 
    padding-top: 30px; 
 
    position: relative; 
 
} 
 

 
.video-container iframe, 
 
.video-container object, 
 
.video-container embed { 
 
    height: 100%; 
 
    left: 0; 
 
    position: absolute; 
 
    top: 0; 
 
    width: 100%; 
 
} 
 

 
#footer { 
 
    text-align: center; 
 
    bottom: 0; 
 
    width: 100%; 
 
} 
 

 
#content { 
 
    width: 80%; 
 
    max-width: 576px; 
 
}
<ul class="topnav" id="myTopnav"> 
 
    <li><a href="index.htm">BE COOL COWBOY</a></li> 
 
    <li><a href="releases.html">Releases</a></li> 
 
    <li><a href="contact.html">Contact</a></li> 
 
    <li><a href="https://becoolcowboy.bandcamp.com/merch/mammoth-sticker">Merch</a></li> 
 
    <li><a href="http://becoolcowboy.bandcamp.com">Bandcamp</a></li> 
 
    <li class="icon"> 
 
    <a href="javascript:void(0);" style="font-size:15px;" onclick="myFunction()">&#9776;</a> 
 
    </li> 
 
</ul> 
 

 
<!-- Begin Songkick Shows Widget --> 
 

 
<a href="http://www.songkick.com/artists/8724879" class="songkick-widget" data-theme="light" data-track-button="on" data-detect-style="true" data-font-color="#ffffff" data-background-color="transparent"></a> 
 
<script src="//widget.songkick.com/widget.js"></script> 
 

 
<!-- End Songkick Shows Widget --> 
 

 
<br></br> 
 

 
<!--Social Media Icons Footer--> 
 

 
<div id="footer" style="text-align:center;"> 
 
    <a href="https://facebook.com/becoolcowboy"><img border="0" alt="Be Cool Cowboy Facebook" src="faceicon.png" width="42" height="42"></a> 
 
    <a href="https://twitter.com/becoolcowboy"><img border="0" alt="Be Cool Cowboy Twitter" src="twiticon.png" width="42" height="42"></a> 
 
    <a href="https://instagram.com/becoolcowboy"><img border="0" alt="Be Cool Cowboy Instagram" src="instaicon.png" width="42" height="42"></a> 
 
    <a href="https://www.youtube.com/channel/UCsA_q-aK0mVF0H6IBe8pQlg"><img border="0" alt="Be Cool Cowboy YouTube" src="yticon.png" width="42" height="42"></a> 
 
</div> 
 

 
<!--navbar script--> 
 

 
<script> 
 
    function myFunction() { 
 
    var x = document.getElementById("myTopnav"); 
 
    if (x.className === "topnav") { 
 
     x.className += " responsive"; 
 
    } else { 
 
     x.className = "topnav"; 
 
    } 
 
    } 
 
</script>

+0

你可以尝试'宽度:100%'的'ul.topnav'? – PumpkinSeed

+0

你好,似乎与移动IOS的问题是有关的固定bg附件,请尝试使用此答案提供的解决方案http://stackoverflow.com/a/21456799/2887133 – DaniP

增加最大高度,以持有该background-image容器,其中,你的情况是<html>

html { 
    background: url(264H.jpg) no-repeat center center fixed; 
    -webkit-background-size: cover; 
    -moz-background-size: cover; 
    -o-background-size: cover; 
    background-size: cover; 
    max-height: 100vh; 
} 

设置max-height100vh(VH是视台。VH是鉴于高),将确保容器的高度不会超过视口的高度,从而包含图像到什么是对用户可见 - 无论可能切换其他DOM节点的任何更改。

更多关于视单位,他们的支持位置:http://caniuse.com/#feat=viewport-units