Question

我想要做的是最后一个元素（例如段落<p>或无序列表<ul>）在header1 <h1>元素后面有一个名为{{1的类使用类specialInstructionsNotes仅对 last 元素应用额外填充（30px）。

我尝试使用specialInstructionsNotes和:first-of-type CSS3选择器，但是这些选择器没有转移到IE8（这是我将要去的最低IE兼容浏览器）。我的目标是能够在所有最新的浏览器和IE8 +中显示CSS设置（将填充应用于仅最后一个具有类:nth-of-type(1)的元素）。

注意：可以有3个或更多元素应用此类，只要具有类specialInstructionsNotes的最后一个元素在最底部有填充。抱歉有任何困惑。

这是我到目前为止的完整CSS：

.specialInstructionNotes

对于HTML，元素位于一个div中，并且是div中包含的最顶层元素。对于我遇到的一些页面/场景，这是我目前的HTML。

第1页：

.specialInstructionsNotes {
    color: #004abc;
    font-size: 1.1em;
    line-height: 26px;
    padding: 0 3%;
}    

h1 + p.specialInstructionsNotes + *, 
    h1 + ul.specialInstructionsNotes + *, 
    h1 + p.specialInstructionsNotes:nth-of-type(1), 
    h1 + ul.specialInstructionsNotes:nth-of-type(1) { 
        padding: 0 0 30px; 
    }

h1 + p.specialInstructionsNotes:first-of-type, 
h1 + ul.specialInstructionsNotes:first-of-type { 
    padding: 0; 
}

第2页：

<div class="span12 main">
<h1><small>Proposal Narrative</small></h1>
            <p class="specialInstructionsNotes">A narrative proposal sufficient for peer review is required. Narratives can be up to <strong>5 single-spaced (12 pt. font) pages</strong>. Please note: the bibliography does <em>not</em> count towards the 5-page limit). The narrative should include:</p>
            <ul class="specialInstructionsNotes">
                <li>A statement of the objectives and significance of the proposed research/creative activity.</li>
                <li>A summary of relevant previous work by the applicant and/or others in the field.</li>
                <li>A description of the plan for accomplishing the objectives - include methodology, the roles of all personnel involved, and plans for access to any special resources.</li>
                <li>Although budget details and justification for personnel and non-personnel costs are required in the budget section, the narrative should make reference to all items, activities, and services of the requested funding.</li>
            </ul>
.
.
.
other elements added to the page
.
.
.
</div>

第3页：

<div class="span12 main">
<h1><small>Brief Summary of Current Research/Creative Activities</small></h1>
            <p class="specialInstructionsNotes">A brief summary of the investigator’s research/creative activities, whether or not they are related to the activities proposed in this application.</p>
.
.
.
other elements added to the page
.
.
.
</div>

第4页：

<div class="span12 main">
<h1><small>Supplemental Information</small></h1>
            <ul class="specialInstructionsNotes">
                <li>Supplemental information is not required. </li>
                <li>Please do not upload article reprints or book chapters. </li>
                <li>Uploaded files must be less than 1 megabyte in size. If you are attempting to upload scanned documents please use the OCR function to convert them to text before uploading. </li>
            </ul>
.
.
.
other elements added to the page
.
.
.
</div>

如果我需要进一步解释，请告诉我。

Answer 1

这样的解决方法怎么样？

.specialInstructionsNotes {
   padding-bottom: 30px; /* set padding for all special elements */
}
.specialInstructionsNotes + .specialInstructionsNotes {
   margin-top: -30px; /* but make the next element hide the bottom padding
                         of its preceding siblings of the same class */
}

Answer 2

如果你需要你的解决方案工作超过两次.specialInstructionsNotes并且你想要第一个元素上的填充，如果没有其他的，那么js解决方案会派上用场，即使它是不喜欢你;）

<强> JS

$('h1').each(function() {
    $(this).nextAll('.specialInstructionsNotes:last').addClass('last-note');
});

然后很容易解决CSS中的问题：

<强> CSS

.specialInstructionsNotes.last-note {
    padding: 0 0 30px; 
}

<强> See the exemplary Fiddle

Answer 3

将它们添加到您的<head>部分：

使用CSS（脏但有效！）：

<!--[if lte IE 8]>
<style type="text/css">
    .main .specialInstructionsNotes{
        padding-bottom: expression(this.nextSibling==null?'30px':'3%');
    }
</style>
<![endif]-->

您还可以创建一个包含上述CSS的ie.css，并将其命名为：

<!--[if lte IE 8]>
    <link rel="stylesheet" href="ie.css" type="text/css" />
<![endif]-->

使用jQuery：

<!--[if lte IE 8]>
    <script type="text/javascript">
        $(function(){
            $(".main :last-child.specialInstructionsNotes").css("padding-bottom", "30px dashed red");
        });
    </script>
<![endif]-->

参考文献：http://mauzon.com/pseudoclasses-first-child-and-last-child-for-ie6/

在<h1> </h1>之后将填充应用于具有某些类的元素

3 个答案: