css - Full-screen responsive background image

Question

I am very new to Front-end development and Foundation.

I am trying to get <div class="main-header"> to be a full screen image that scales down responsively.

Can anyone tell me what I am doing wrong? It is scaling properly, but is not showing the full image. I also wanted the <div class="large-6 large-offset-6 columns"> to sit above it on a mobile device – is that possible?

The HTML:

<!-- MAIN HEADER -->
<div class="main-header">
   <div class="row">
     <div class="large-6 large-offset-6 columns">
       <h1 class="logo">BleepBleeps</h1>
       <h3>A family of little friends<br>that make parenting easier</h3>
     </div> <!-- END large-6 large-offset-6 columns -->
   </div><!-- END ROW -->
</div><!-- END MAIN-HEADER -->

The CSS:

.main-header {
    background-image: url(../img/bb-background2.png);
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    width: 100%;
    height: 100%;
}

h1.logo {
    text-indent: -9999px;
    height:115px;
    margin-top: 10%;
}

score 110 · Accepted Answer

http://css-tricks.com/perfect-full-page-background-image/

//HTML
<img src="images/bg.jpg" id="bg" alt="">

//CSS
#bg {
  position: fixed; 
  top: 0; 
  left: 0; 

  /* Preserve aspet ratio */
  min-width: 100%;
  min-height: 100%;
}

或者

img.bg {
  /* Set rules to fill background */
  min-height: 100%;
  min-width: 1024px;

  /* Set up proportionate scaling */
  width: 100%;
  height: auto;

  /* Set up positioning */
  position: fixed;
  top: 0;
  left: 0;
}

@media screen and (max-width: 1024px) { /* Specific to this particular image */
  img.bg {
    left: 50%;
    margin-left: -512px;   /* 50% */
  }
}

或者

//HTML
<img src="images/bg.jpg" id="bg" alt="">

//CSS
#bg { position: fixed; top: 0; left: 0; }
.bgwidth { width: 100%; }
.bgheight { height: 100%; }

//jQuery
$(window).load(function() {    

        var theWindow        = $(window),
            $bg              = $("#bg"),
            aspectRatio      = $bg.width() / $bg.height();

        function resizeBg() {

                if ( (theWindow.width() / theWindow.height()) < aspectRatio ) {
                    $bg
                        .removeClass()
                        .addClass('bgheight');
                } else {
                    $bg
                        .removeClass()
                        .addClass('bgwidth');
                }

        }

        theWindow.resize(resizeBg).trigger("resize");

});

score 33 · Accepted Answer

<style type="text/css">
html { 
  background: url(images/bg.jpg) no-repeat center center fixed; 
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}
</style>

score 16 · Accepted Answer

用于全屏响应背景图像

设置 CSS 高度（高度：100vh）

例子：

.main-header {
    background-image: url(../img/bb-background2.png);
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    width: 100%;
    height:100vh;  /* responsive height */
}

score 7 · Accepted Answer

关于“背景尺寸：覆盖”解决方案的一个提示，你必须把它放在“背景”定义之后，否则它将不起作用，例如这不起作用：

html, body {
    height: 100%;
    background-size: cover;
    background:url("http://i.imgur.com/aZO5Kolb.jpg") no-repeat center center fixed;
}

http://jsfiddle.net/8XUjP/58/

score 6 · Accepted Answer

我个人不建议在 HTML 标签上应用样式，它可能会在开发后期的某个地方产生影响。

所以我个人建议将 background-image 属性应用于 body 标签。

body{
    width:100%;
    height: 100%;
    background-image: url("./images/bg.jpg");
    background-position: center;
    background-size: 100% 100%;
    background-repeat: no-repeat;
}

这个简单的技巧解决了我的问题。这适用于大多数屏幕较大/较小的屏幕。

有很多方法可以做到这一点，我发现这个更简单，后效最小

score 6 · Accepted Answer

我的发布前网站EnGrip也遇到了同样的问题。我带着这个问题去生活。但经过几次试验后，这终于对我有用了：

background-size: cover;
background-repeat: no-repeat;
position: fixed;
background-attachment: scroll;
background-position: 50% 50%;
top: 0;
right: 0;
bottom: 0;
left: 0;
content: "";
z-index: 0;

纯 CSS 解决方案。我这里没有任何 JS/JQuery 修复。即使是这个 UI 开发的新手。自从我昨天阅读了这个帖子以来，我只是想我会分享一个可行的解决方案。

score 2 · Accepted Answer

尝试这个：

<img src="images/background.jpg" 

style="width:100%;height:100%;position:absolute;top:0;left:0;z-index:-5000;">

http://thewebthought.blogspot.com/2010/10/css-making-background-image-fit-any.html

score 2 · Accepted Answer

后伸

查看这个响应式缩放背景图像的单线插件。

您需要做的就是：

1. 包含库：

<script type="text/javascript" src="http://cdnjs.cloudflare.com/ajax/libs/jquery-backstretch/2.0.4/jquery.backstretch.min.js"></script>

2.调用方法：

$.backstretch("http://dl.dropbox.com/u/515046/www/garfield-interior.jpg");

我将它用于我拥有的一个简单的“正在建设的网站”网站，它运行良好。

score 1 · Accepted Answer

您也可以在不使用 JavaScript 的情况下制作全屏横幅部分，基于纯 css 的响应式全屏横幅部分，使用高度：100vh；在横幅主 div 中，这里有一个活生生的例子

#bannersection {
    position: relative;
    display: table;
    width: 100%;
    background: rgba(99,214,250,1);
    height: 100vh;
}

https://www.htmllion.com/fullscreen-header-banner-section.html

score 0 · Accepted Answer

我已经完成了这个 javascript 函数：它在不改变图像纵横比的情况下，将您的背景图像以最重要的尺寸（宽度 od 高度）固定为您的屏幕尺寸。

<script language="Javascript">

function FixBackgroundToScreen()
{
    bgImg = new Image(); 
    bgImg.src = document.body.background;

    if ((bgImg.height / window.innerHeight) < (bgImg.width / window.innerWidth))
        document.body.style.backgroundSize = "auto 100%";
    else
        document.body.style.backgroundSize = "100% auto";
};    
</script>

这个功能是你唯一需要的。它必须通过 window.onresize 事件和 body.onload 事件调用。图片必须是 background-repeat: no-repeat; 背景附件：固定；

<script language="Javascript">
window.onresize=function(){FixBackgroundToScreen();};
</script>

<body onload="FixBackgroundToScreen();">

您可以在我的网站www.andreamarulla.it中看到该功能

对不起我的英语......安德里亚;-)

score 0 · Accepted Answer

For the full-screen responsive background image cover

<div class="full-screen">

</div>

CSS

.full-screen{
    background-image: url("img_girl.jpg");
    height: 100%; 
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}

score 0 · Accepted Answer

我会说，在你的布局文件中给出一个

<div id="background"></div>

然后在你的css中做

#background {
 position: fixed;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  z-index: -100;
  -webkit-transform: translateX(-50%) translateY(-50%);
  transform: translateX(-50%) translateY(-50%);
  background: image-url('background.png') no-repeat;
  background-size: cover;
}

并确保在您的 app/assets/images 中有背景图片，并更改

background: image-url('background.png') no-repeat;

'background.png' 到您自己的背景图片。

score 0 · Accepted Answer

这对我有用，所以发布这个。

.my-container {
  position: relative;
  background: #696969;
  overflow: hidden;
}
.my-container:before {
  content: ' ';
  display: block;
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  opacity: 0.6;
  background-image: url('https://images.pexels.com/photos/1084542/pexels-photo-1084542.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260');
  background-repeat: no-repeat;
  background-position: 50% 0;
  -ms-background-size: cover;
  -o-background-size: cover;
  -moz-background-size: cover;
  -webkit-background-size: cover;
  background-size: cover;
}

score 0 · Accepted Answer

简单的全屏和居中图像 https://jsfiddle.net/maestro888/3a9Lrmho

jQuery(function($) {
    function resizeImage() {
        $('.img-fullscreen').each(function () {
            var $imgWrp = $(this);

            $('img', this).each(function () {
                var imgW = $(this)[0].width,
                    imgH = $(this)[0].height;

                $(this).removeClass();

                $imgWrp.css({
                    width: $(window).width(),
                    height: $(window).height()
                });

                imgW / imgH < $(window).width() / $(window).height() ?
                    $(this).addClass('full-width') : $(this).addClass('full-height');
            });
        });
    }

    window.onload = function () {
        resizeImage();
    };

    window.onresize = function () {
        setTimeout(resizeImage, 300);
    };
 
    resizeImage();
});

/*
 * Hide scrollbars
 */

#wrapper {
    overflow: hidden;
}

/*
 * Basic styles
 */

.img-fullscreen {
    position: relative;
    overflow: hidden;
}

.img-fullscreen img {
    vertical-align: middle;
    position: absolute;
    display: table;
    margin: auto;
    height: auto;
    width: auto;
    bottom: -100%;
    right: -100%;
    left: -100%;
    top: -100%;
}

.img-fullscreen .full-width {
    width: 100%;
}

.img-fullscreen .full-height {
    height: 100%;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>

<div id="wrapper">
    <div class="img-fullscreen">
        <img src="https://static.pexels.com/photos/33688/delicate-arch-night-stars-landscape.jpg" alt=""/>
    </div>
</div>

score -1 · Accepted Answer

通过使用下面的代码：

.classname{
    background-image: url(images/paper.jpg);
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
}

希望它有效。谢谢

css - Full-screen responsive background image

15 回答 15

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