内衬100%高

I have an iframe in my HTML document and I'm having a bit of trouble.

我的HTML文档中有一个iframe，我遇到了一些麻烦。

I also have a URL bar (fixed position element) at the top of the page that should stay with the user as they scroll. That works fine. I'd like the iframe to fill the remaining space but not be covered up by the URL bar.

我还在页面顶部有一个URL栏(固定位置元素)，当用户滚动时，它应该与用户保持一致。工作的很好。我希望iframe填充其余的空间，但不被URL栏覆盖。

This is what I'm talking about. http://s75582.gridserver.com/Ls

这就是我要说的。http://s75582.gridserver.com/Ls

How can I fix this so that the URL bar doesn't cover up part of the page? When I try setting padding in the body, it just creates an extra, annoying scroll bar.

如何修复这个，使URL栏不会覆盖页面的一部分?当我尝试在body中设置填充时，它会创建一个额外的、令人讨厌的滚动条。

4 个解决方案

#1

Whilst you can't say ‘height: 100% minus some pixels’ in CSS, you can make the iframe 100% high, then push its top down using padding. Then you can take advantage of the CSS3 box-sizing property to make the padding get subtracted from the height.

虽然在CSS中不能说“高度:100%减去一些像素”，但是可以将iframe设置为100%的高，然后使用填充将其从上往下推。然后，您可以利用CSS3 box尺寸特性，使填充从高度中减去。

This:

这样的:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html><head>
    <title>test</title>
    <style type="text/css">
        html, body { margin: 0; padding: 0; height: 100%; }
        #bar { height: 32px; background: red; }
        iframe {
            position: absolute;
            top: 0; left: 0; width: 100%; height: 100%;
            border: none; padding-top: 32px;
            box-sizing: border-box; -moz-box-sizing: border-box; -webkit-box-sizing: border-box;
        }
    </style>
</head><body>
    <iframe src="http://www.google.com/"></iframe>
    <div id="bar">foo</div>
<body></html>

Works on IE8, Moz, Op, Saf, Chrome. You'd have to carry on using a JavaScript fallback to make the extra scrollbar disappear for browsers that don't support box-sizing though (in particular IE up to 7).

适用于IE8, Moz, Op, Saf, Chrome。您将不得不继续使用JavaScript回退，以使不支持装箱大小的浏览器的额外滚动条消失(特别是IE到7)。

#2

It can be done without any Javascript, works in IE7

在IE7中，不需要任何Javascript就可以完成

CSS:

body {
    overflow-y: hidden;
}

#imagepgframe { 
    width: 100%;
    height: 100%;
    position: absolute;
}

#wrap { 
    width: 100%;
    position: absolute;
    top: 100px; 
    left: 0;
    bottom: 0;
}

HTML:

<div id="wrap"> 
    <iframe  id="imagepgframe" frameBorder="0" src="http://en.wikipedia.org/wiki/Internet_Explorer_7"></iframe>
</div>

#3

To build on top of bobince's answer:

在bobince的回答之上:

Erik Arvidsson came up with a way to (kinda, sorta) add box-sizing support to IE6/IE7. However, his solution doesn't support units other than px. Like you, I needed a percentage height, so I added support for percents.

Erik Arvidsson想出了一种方法(有点，sorta)给IE6/IE7增加了盒子大小的支持。但是，他的解决方案不支持px以外的单位。像你一样，我需要一个百分比的高度，所以我增加了对百分点的支持。

Once you've downloaded and unzipped the zip file, open boxsizing.htc and replace the following border/padding functions:

下载并解压zip文件后，打开boxsizing尺寸。替换以下边框/填充功能:

/* border width getters */
function getBorderWidth(el, sSide) {
    if (el.currentStyle["border" + sSide + "Style"] == "none")
        return 0;
    var n = parseInt(el.currentStyle["border" + sSide + "Width"]);
    return n || 0;
}

function getBorderLeftWidth()   { return getBorderWidth((arguments.length > 0 ? arguments[0] : element), "Left"); }
function getBorderRightWidth()  { return getBorderWidth((arguments.length > 0 ? arguments[0] : element), "Right"); }
function getBorderTopWidth()    { return getBorderWidth((arguments.length > 0 ? arguments[0] : element), "Top"); }
function getBorderBottomWidth() { return getBorderWidth((arguments.length > 0 ? arguments[0] : element), "Bottom"); }
/* end border width getters */

/* padding getters */
function getPadding(el, sSide) {
    var n = parseInt(el.currentStyle["padding" + sSide]);
    return n || 0;
}

function getPaddingLeft()   { return getPadding((arguments.length > 0 ? arguments[0] : element), "Left"); }
function getPaddingRight()  { return getPadding((arguments.length > 0 ? arguments[0] : element), "Right"); }
function getPaddingTop()    { return getPadding((arguments.length > 0 ? arguments[0] : element), "Top"); }
function getPaddingBottom() { return getPadding((arguments.length > 0 ? arguments[0] : element), "Bottom"); }
/* end padding getters */

Then replace updateBorderBoxWidth and updateBorderBoxHeight with the following:

然后用以下方法替换updateBorderBoxWidth和updateBorderBoxHeight:

function updateBorderBoxWidth() {
    element.runtimeStyle.width = "";
    if (getDocumentBoxSizing() == getBoxSizing())
        return;
    var csw = element.currentStyle.width;
    var w = null;
    if (csw != "auto" && csw.indexOf("px") != -1) {
        w = parseInt(csw);
    } else if (csw != "auto" && csw.indexOf("%") != -1) {
        var origDisplay = element.runtimeStyle.display;
        element.runtimeStyle.display = "none";

        w = Math.max(0, (parseInt(element.parentNode.clientWidth) - (
                getBorderLeftWidth(element.parentNode)
                 + getPaddingLeft(element.parentNode)
                 + getPaddingRight(element.parentNode)
                 + getBorderRightWidth(element.parentNode)
        )) * (parseInt(csw) / 100));

        element.runtimeStyle.display = origDisplay;
    }
    if (w !== null) {
        if (getBoxSizing() == "border-box") {
            setBorderBoxWidth(w);
        } else {
            setContentBoxWidth(w);
        }
    }
}

function updateBorderBoxHeight() {
    element.runtimeStyle.height = "";   
    if (getDocumentBoxSizing() == getBoxSizing())
        return;
    var csh = element.currentStyle.height;
    var h = null;
    if (csh != "auto" && csh.indexOf("px") != -1) {
        h = parseInt(csh);
    } else if (csh != "auto" && csh.indexOf("%") != -1) {
        var origDisplay = element.runtimeStyle.display;
        element.runtimeStyle.display = "none";

        h = Math.max(0, (parseInt(element.parentNode.clientHeight) - (
                getBorderTopWidth(element.parentNode)
                + getPaddingTop(element.parentNode)
                + getPaddingBottom(element.parentNode)
                + getBorderBottomWidth(element.parentNode)
        )) * (parseInt(csh) / 100));

        element.runtimeStyle.display = origDisplay;
    }
    if (h !== null) {
        if (getBoxSizing() == "border-box") {
            setBorderBoxHeight(h);
        } else {
            setContentBoxHeight(h);
        }
    }
}

Then just use the file as you would otherwise:

然后你就可以像平时一样使用这个文件:

.border-box {
    behavior:           url("boxsizing.htc");
    box-sizing:         border-box;
    -moz-box-sizing:    border-box;
    -webkit-box-sizing: border-box;
}

Here's a pretty thorough test I put together while developing my modifications:

这是我在进行修改时做的一个非常全面的测试:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
    <head>
        <title>box-sizing: border-box;</title>
        <style type="text/css">
            html, body {
                margin:     0;
                padding:    0;
                width:      100%;
                height:     100%;
                background: yellow;
            }
            body {
                padding-top:    50px;
                padding-bottom: 50px;
            }
            p {
                margin: 0;
            }

                #header, #footer {
                    height:   50px;
                    position: absolute;
                    width:    100%;
                    overflow: hidden;
                }
                    #header {
                        background: red;
                        top:        0;
                    }
                    #footer {
                        background: blue;
                        bottom:     0;
                    }

                #content {
                    width:          100%;
                    height:         100%;
                    border:         none;
                    margin:         0;
                    padding:        0;
                    background:     black;
                    color:          white;
                    overflow:       auto;
                    position:       relative;
                    padding-top:    40px;
                    padding-bottom: 40px;
                }

                        #nested-header, #nested-footer {
                            position:   absolute;
                            height:     40px;
                            width:      100%;
                            background: #CCC;
                        }
                            #nested-header {
                                top: 0;
                            }
                            #nested-footer {
                                bottom: 0;
                            }

                        #nested-content-wrap {
                            height: 100%;
                        }
                            #nested-floater {
                                height: 100%;
                                float:  left;
                                width:  100px;
                            }
                            #nested-content {
                                height:     100%;
                                background: green;
                                color:      black;
                                overflow:   auto;
                                position:   relative;
                            }

                                #inner-nest {
                                    height:   100%;
                                    position: relative;
                                }
                                    #inner-head {
                                        height:     30px;
                                        width:      100%;
                                        background: #AAA;
                                        position:   absolute;
                                        top:        0;
                                    }
                                    #inner-content {
                                        padding-top: 30px;
                                        height:      100%;
                                        overflow:    auto;
                                    }

                .border-box {
                    behavior:           url("boxsizing.htc");
                    box-sizing:         border-box;
                    -moz-box-sizing:    border-box;
                    -webkit-box-sizing: border-box;
                }

                .content-box {
                    behavior:           url("boxsizing.htc");
                    box-sizing:         content-box;
                    -moz-box-sizing:    content-box;
                    -webkit-box-sizing: content-box;
                }

                legend {
                    color: black;
                }

                form {
                    margin: 1em 0;
                }

                .wrap {
                    height:     100px;
                    background: #000;
                    overflow:   hidden;
                }

                .test {
                    width:          100px;
                    height:         100%;
                    background:     #AAA;
                    border-color:   #EEE;
                    padding-left:   20px;
                    padding-top:    20px;
                    padding-bottom: 5px;
                    float:          left;
                }

                .fill {
                    width:      100%;
                    height:     100%;
                    background: #CCC;
                }

                .gauge {
                    width:        99px;
                    background:   white;
                    border-right: 1px solid green;
                    height:       100%;
                    float:        left;
                }

                .notes {
                    background: #8FC561;
                }

                .clear {
                    clear: both;
                }

                /* 120px x 120px square; this will create a black 20px frame on the inside */
                .boxtest-wrapper {
                    width:      100px;
                    height:     100px;
                    float:      left;
                    background: black;
                    color:      white;
                    margin:     1em;
                    padding:    20px;
                }

                #boxtest-4-container {
                    width:  100%;
                    height: 100%;
                }

                .boxtest {
                    width:      100%;
                    height:     100%;
                    background: white;
                    color:      black;
                    border:     5px solid green;
                    overflow:   hidden;
                }
        </style>
        <script type="text/javascript">
            function addBorderBox() {
                var wrap1 = document.getElementById("wrap-1");
                var wrap2 = document.getElementById("wrap-2");

                var borderBox = document.createElement("div");
                borderBox.className = "test border-box";

                var borderBoxFill = document.createElement("div");
                borderBoxFill.className = "fill";

                var borderBoxContent = document.createTextNode("Generated border box fill");

                borderBoxFill.appendChild(borderBoxContent);
                borderBox.appendChild(borderBoxFill);

                var gauge = document.createElement("div");
                gauge.className = "gauge";

                var gaugeText1 = "width: 100px";
                var gaugeText2 = "height: 100%";
                var gaugeText3 = "bottom should be visible";

                gauge.appendChild(document.createTextNode(gaugeText1));
                gauge.appendChild(document.createElement("br"));
                gauge.appendChild(document.createTextNode(gaugeText2));
                gauge.appendChild(document.createElement("br"));
                gauge.appendChild(document.createTextNode(gaugeText3));

                wrap1.appendChild(borderBox);
                wrap2.appendChild(gauge);
            }
        </script>
    </head>
    <body id="body" class="border-box">
        <div id="header">
            <p>Header - 50px;</p>
        </div>
        <div id="content" class="border-box">
            <div id="nested-header">
                <p>Nested Header - 40px;</p>
            </div>
            <div id="nested-content-wrap">
                <div id="nested-floater">
                    <p>Float - 100px;</p>
                    <ul>
                        <li>This element should never scroll.</li>
                    </ul>
                </div>
                <div id="nested-content">
                    <div id="inner-nest">
                        <div id="inner-head">
                            <p>Inner Head - 30px;</p>
                        </div>
                        <div id="inner-content" class="border-box">
                            <div style="float: right; ">
                                <p>The fourth square should look just like the other three:</p>

                                <div id="boxtest-wrapper-1" class="boxtest-wrapper">
                                    <div id="boxtest-1" class="boxtest border-box"></div>
                                </div>
                                <div id="boxtest-wrapper-2" class="boxtest-wrapper">
                                    <div id="boxtest-2" class="boxtest border-box"></div>
                                </div>
                                <br class="clear" />
                                <div id="boxtest-wrapper-3" class="boxtest-wrapper">
                                    <div id="boxtest-3" class="boxtest border-box"></div>
                                </div>
                                <div id="boxtest-wrapper-4" class="boxtest-wrapper">
                                    <div id="boxtest-4-container">
                                    <!-- boxtest-4-container isn't special in any way. it just has width and height set to 100%. -->
                                        <div id="boxtest-4" class="boxtest border-box"></div>
                                    </div>
                                </div>
                            </div>

                            <p>Inner Content - fluid</p>

                            <ul>
                                <li>The top of the scrollbar should be covered by the &ldquo;Inner Head&rdquo; element.</li>
                                <li>The bottom of the scrollbar should be visible without having to scroll &ldquo;Inner Head&rdquo; out of view.</li>
                            </ul>

                            <p>Document Compat Mode:
                                <strong id="compatMode">
                                    <script type="text/javascript">
                                        var compatMode = document.compatMode;
                                        if (compatMode != "CSS1Compat") {
                                            document.getElementById("compatMode").style.color = "red";
                                        }
                                        document.write(compatMode);
                                    </script>
                                </strong>
                            </p><br />

                            <div class="notes">
                                <h2>Notes</h2>
                                <ul>
                                    <li>In IE6 and IE7 (and possibly IE8; untested), you'll notice a slight shift of contents that have <code>box-sizing</code> set to <code>border-box</code>. This is the amount of time it takes for <a href="box-sizing.htc">box-sizing.htc</a> to finish downloading.</li>
                                    <li>This workaround is not live. Anything that causes a <a href="http://www.phpied.com/rendering-repaint-reflowrelayout-restyle/">reflow or repaint</a> will not currently trigger an update to widths and heights of <code>border-box</code> elements.</li>
                                    <li>See <a href="http://webfx.eae.net/dhtml/boxsizing/boxsizing.html">http://webfx.eae.net/dhtml/boxsizing/boxsizing.html</a> for the original solution to the IE6/IE7 <code>border-box</code> problem. <a href="box-sizing.htc">box-sizing.htc</a> has been modified to allow for percentage widths and heights.</li>
                                    <li>To see what this example should look like without the use of <a href="box-sizing.htc">box-sizing.htc</a>, view it in Firefox or IE8.</li>
                                </ul>
                            </div>

                            <br class="clear" />
                            <form>
                                <fieldset>
                                    <legend>DOM Update Test</legend>
                                    <input type="button" value="Click to add border-box" onclick="addBorderBox(); " />
                                </fieldset>
                            </form>

                            <div id="wrap-1" class="wrap">
                                <div class="test content-box" id="content-box-1" style="border-width: 5px; border-style: solid;">
                                    <div class="fill">Content box fill</div>
                                </div>
                                <div class="test content-box" id="content-box-2" style="border-width: 5px; border-style: solid; padding: 5px;">
                                    <div class="fill">Content box fill</div>
                                </div>
                                <div class="test border-box" id="border-box-1" style="border-width: 5px; border-style: solid;">
                                    <div class="fill">Border box fill</div>
                                </div>
                                <div class="test border-box" id="border-box-2" style="border-width: 5px; border-style: solid; padding: 5px;">
                                    <div class="fill">Border box fill</div>
                                </div>
                                <div class="test" id="default-box-1" style="border-width: 5px; border-style: solid;">
                                    <div class="fill">Default box fill</div>
                                </div>
                                <div class="test" id="default-box-2" style="border-width: 5px; border-style: solid; padding: 5px;">
                                    <div class="fill">Default box fill</div>
                                </div>
                            </div>
                            <div id="wrap-2" class="wrap">
                                <!-- subtract 1 from width for 1px right border -->
                                <div class="gauge" style="width: 129px;">width: 130px<br />height: 100%<br />bottom should be cut off</div>
                                <div class="gauge" style="width: 119px;">width: 120px<br />height: 100%<br />bottom should be cut off</div>
                                <div class="gauge">width: 100px<br />height: 100%<br />bottom should be visible</div>
                                <div class="gauge">width: 100px<br />height: 100%<br />bottom should be visible</div>
                                <div class="gauge" style="width: 129px;">width: 130px<br />height: 100%<br />bottom should be cut off</div>
                                <div class="gauge" style="width: 119px;">width: 120px<br />height: 100%<br />bottom should be cut off</div>
                            </div>
                            <br class="clear" />

                            <script type="text/javascript">
                                var lipsum = "<p>Lorem ipsum dolor sit amet.</p>";

                                for (var i = 0; i < 100; i++) {
                                    document.write(lipsum);
                                }
                            </script>
                        </div>
                    </div>
                </div>
            </div>
            <div id="nested-footer">
                <p>Nested Footer - 40px;</p>
            </div>
        </div>
        <div id="footer">
            <p>Footer - 50px;</p>
        </div>
    </body>
</html>

#4

If by covering up part of the page, you mean the page displayed in the iframe, one thought might be to add a top margin to your iframe, using the margin-top: property in CSS. This would eliminate the scroll bar given that you properly constrained the height of the iframe.

如果通过覆盖页面的一部分，您是指在iframe中显示的页面，那么您可能会考虑使用CSS中的margin-top: property向iframe添加一个顶边距。这将消除滚动条，因为您适当地限制了iframe的高度。

#1