CSS内联/阻止问题

Question

使用<span>代码时，我遇到css内联/阻止问题。

从图像中可以看到，当您将鼠标悬停在第三条消息上时会弹出“删除/回复”控件，我不希望他们将内容推下来。我怎么能做到这一点？

这是我的css代码：

ul.inbox {
    width: 100%;
    list-style-type: none;
}

.unread {
    border: 1px solid #999 !important;
    background: #eee url("new.png") no-repeat !important;
    background-position: left center !important;
}

li span.hidden {
    clear: both;
    visibility: hidden;
}

li span.messageControls {
    clear: both;
    float: right;
    display: inline;
}

li span.messageControls a {
    padding: 5px 5px 0 0;
    font-size: 12px;
    color: #06c;
}

li.message {
    background: #eee;
    border: 1px solid #ddd;
    list-style-type: none;
    display: block;
    margin: 0 0 10px;
    padding-left: 30px;
    background-position: left center;
}

li.message:hover {

}

li.message a {
    text-decoration: none;
}

li {
    overflow: hidden;
}

li span.from {
    margin: 5px 0 5px 5px;
    font-family:"Open Sans",sans-serif;
    font-size: 14px;
    color: #666;
    float: left;
    font-weight: 700;
}

li span.date {
    margin: 5px 5px 5px 0;
    font-size: 12px;
    float: right;
    color: #06c;
}

li p.subject {
    margin: 5px 0 5px 5px;
    font-size: 14px;
    color: #666;
    clear: both;
    font-weight: 700;
}

li p.preview {
    margin: 5px 0 5px 5px;
    font-size: 12px;
    color: #999;
}

我的'收件箱'代码：

<ul class="inbox">
    <li id="1001843" class="message " onmouseout="document.getElementById('1001843MC').className='hidden'" onmouseover="document.getElementById('1001843MC').className='messageControls'" onclick="ajaxMessage(1001843);">
        <span class="from">Michael‌·Norris</span> <span class="date">Yesterday‌·21:18</span> <span id="1001843MC" class="hidden"><a href="compose.php?id=&to=">Reply</a> &nbsp; <a href="update.php?id=&action">Delete</a></span>

        <p class="subject">gjhgjhg</p>

        <p class="preview">jhgjhgjhg</p>
    </li>

    <li id="1001842" class="message " onmouseout="document.getElementById('1001842MC').className='hidden'" onmouseover="document.getElementById('1001842MC').className='messageControls'" onclick="ajaxMessage(1001842);">
        <span class="from">Michael‌·Norris</span> <span class="date">Yesterday‌·21:18</span> <span id="1001842MC" class="hidden"><a href="compose.php?id=&to=">Reply</a> &nbsp; <a href="update.php?id=&action">Delete</a></span>

        <p class="subject">gfhjgjfdhsgf</p>

        <p class="preview">gj‌·hg</p>
    </li>

    <li id="1001841" class="message " onmouseout="document.getElementById('1001841MC').className='hidden'" onmouseover="document.getElementById('1001841MC').className='messageControls'" onclick="ajaxMessage(1001841);">
        <span class="from">Michael‌·Norris</span> <span class="date">Yesterday‌·20:17</span> <span id="1001841MC" class="hidden"><a href="compose.php?id=&to=">Reply</a> &nbsp; <a href="update.php?id=&action">Delete</a></span>

        <p class="subject">gjhgjhg</p>

        <p class="preview">jhgjhgjhg</p>
    </li>
</ul>

在这里小提琴：http://jsfiddle.net/Er73L/

Answer 1

您需要正确设置clear属性才能实现所需的行为，而不是盲目地使用clear: both。

我对你的CSS进行了两处更改：

li span.messageControls {
    clear: right; /* was clear: both; */
    float: right;
    display: block; /* was display: inline */
}

li p.subject {
    margin: 5px 0 5px 5px;
    font-size: 14px;
    color: #666;
    clear: left; /* was clear: both; */
    font-weight: 700;
}

这是一个working example。我还建议你阅读documentation。

Answer 2

以下是我建议您解决此问题的方法：http://jsfiddle.net/Er73L/1/

这是与原始CSS相比的差异：http://www.diffchecker.com/3tKbEnCe

li span.messageControls {
    position: absolute;
    right: 0;
    top: 1em;
}

li.message {
    background: #eee;
    border: 1px solid #ddd;
    list-style-type: none;
    display: block;
    margin: 0 0 10px;
    padding-left: 30px;
    background-position: left center;
    position: relative;  // NEW LINE
}

Answer 3

简单修复，只需使用clear:left代替clear:both，如下所示：

li p.subject {
    margin: 5px 0 5px 5px;
    font-size: 14px;
    color: #666;
    clear:left;
    font-weight: 700;
}

Fiddle

Answer 4

另一个选择是绝对定位span元素。只需将此行添加到您的CSS底部并根据需要进行调整......

.messageControls{width:100px;border:1px solid red;position:absolute;right:0;margin-top:20px;}

http://jsfiddle.net/nYCsx/1/