伪元素后不显示? [英] Pseudo-element after not showing?

问题描述

我想在某些表单字段的末尾添加帮助徽标，以打开工具提示.

I want to add a help logo at the end of some form fields which opens a tooltip.

一切正常，但是.helptip图标( http://img1.wsimg.com/shared/img/1/small-help-icon.gif )与文字一起出现在左侧(合并).我实际上想要在跨度文本的右边，所以我做了.help-tip:after.但是然后什么也没有出现.

Everything is working, but the .helptip icon (http://img1.wsimg.com/shared/img/1/small-help-icon.gif) is coming on the left(merged) with the text. I actually want in on the right of span text, so I did .help-tip:after. But then nothing shows up at all.

您能找出问题所在吗?

<div class="advancedSearchFormSelectField fclear">
<span id="view_format_mis" class="advancedSearchFormlabel help-tip"> Include Columns in Result Set </span>

<select class="advancedSearchFormSelectBox" id="filters_include_columns" multiple="multiple" name="filters[include_columns][]">

<option value="x">X</option>
<option value="y">Y</option>
<option value="z">Z</option>
</select>
</div>

<div class="advancedSearchFormSelectField fclear">
<span id="view_format_mis" class="advancedSearchFormlabel"> Sort Column </span>
<!--No help tip here -->    
<select class="advancedSearchFormSelectBox" id="filters_sort_columns" multiple="multiple" name="filters[sort_columns]">

<option value="a">A</option>
<option value="b">B</option>
<option value="c">C</option>
</select>
</div>

.help-tip {
/* Merged text at the moment. .help-tip:after not working */ 
    cursor: pointer;
    width: 10px;
    height: 10px;
    background-repeat: no-repeat;
    background-image: url("/assets/small-help-icon.gif");
}

.advancedSearchFormSelectField{
    width:300px;
    margin: 5px;
    height: 60px;
    float:left;
}

推荐答案

您目前似乎没有使用伪元素.尝试将此设置从.help-tip设置为.help-tip::after，并给出content: ""和display: inline-block:

You don't seem to be using a pseudo-element at the moment. Try this setting .help-tip to .help-tip::after and giving is content: "" and display: inline-block:

.help-tip::after {
    content: "";
    display: inline-block;
    cursor: pointer;
    width: 10px;
    height: 10px;
    background-repeat: no-repeat;
    background-image: url("/assets/small-help-icon.gif");
}

这篇关于伪元素后不显示?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！