自定义复选框仅使用CSS和HTML

问题描述

我需要使用html和CSS创建自定义复选框。到目前为止，我有：

HTML / CSS：

$ b $ 已勾选复选框应该是一个复选标记，其周围是正方形，而不仅仅是复选标记。搜索答案时，我只发现使用UTF-8字符或图像显示复选标记的情况。我无法使用这两者中的任何一种来完成我想要完成的任务。我只能使用纯CSS和HTML。有什么建议？

codepen在这里：

解决方案

问题在于您使用的是相同的用于方形边框的伪元素和复选标记。简单的解决方案是继续在边界之前使用：before 伪元素，然后在之后使用：伪>元素的复选标记。

您必须将：伪元素相对到 .checkbox-custom 标签元素

以下是更新的代码：

  .checkbox-custom {display：none;}。checkbox-custom-label {display：inline-block;位置：相对; vertical-align：middle; margin：5px; cursor：pointer;}。checkbox-custom + .checkbox-custom-label：before {content：'';背景：#fff; border-radius：5px; border：2px solid #ddd;显示：inline-block; vertical-align：middle;宽度：10px; height：10px; padding：2px; margin-right：10px;} checkbox-custom：checked + .checkbox-custom-label：after {content：; padding：2px;位置：绝对;宽度：1px; height：5px;边框：纯蓝色; border-width：0 3px 3px 0;转换：旋转（45度）; top：2px; left：5px;}  

< h3>复选框< /& H3>< DIV> < input id =checkbox-1class =checkbox-customname =checkbox-1type =checkbox> < label for =checkbox-1class =checkbox-custom-label>第一选择< / label>< / div>< div> < input id =checkbox-2class =checkbox-customname =checkbox-2type =checkbox> < label for =checkbox-2class =checkbox-custom-label>第二选择< / label>< / div>

I need to create a custom checkbox using only html and CSS. So far I have:

HTML/CSS:

.checkbox-custom {
  opacity: 0;
  position: absolute;
}
.checkbox-custom,
.checkbox-custom-label {
  display: inline-block;
  vertical-align: middle;
  margin: 5px;
  cursor: pointer;
}
.checkbox-custom + .checkbox-custom-label:before {
  content: '';
  background: #fff;
  border-radius: 5px;
  border: 2px solid #ddd;
  display: inline-block;
  vertical-align: middle;
  width: 10px;
  height: 10px;
  padding: 2px;
  margin-right: 10px;
  text-align: center;
}
.checkbox-custom:checked + .checkbox-custom-label:before {
  content: "";
  display: inline-block;
  width: 1px;
  height: 5px;
  border: solid blue;
  border-width: 0 3px 3px 0;
  transform: rotate(45deg);
  -webkit-transform: rotate(45deg);
  -ms-transform: rotate(45deg);
  border-radius: 0px;
  margin: 0px 15px 5px 5px;
}

<div>
  <input id="checkbox-1" class="checkbox-custom" name="checkbox-1" type="checkbox">
  <label for="checkbox-1" class="checkbox-custom-label">First Choice</label>
</div>
<div>
  <input id="checkbox-2" class="checkbox-custom" name="checkbox-2" type="checkbox">
  <label for="checkbox-2" class="checkbox-custom-label">Second Choice</label>
</div>

The checked checkbox should be a checkmark with the square bordered around it instead of just a checkmark. Searching for answers, I have only found cases where the checkmark is displayed using a UTF-8 character or an image. I am not able to use either of these for what I am trying to accomplish. I am only able to use plain CSS and HTML. Any suggestions?

codepen here: http://codepen.io/alisontague/pen/EPXagW?editors=110

解决方案

The problem is that you are using the same pseudo element for the square border and the checkmark. The simple solution would be to continue using the :before pseudo element for the border, and then use an :after pseudo element for the checkmark.

Updated Example

You would have to absolutely position the :after pseudo element relative to the parent .checkbox-custom label element.

Here is the updated code:

.checkbox-custom {
  display: none;
}
.checkbox-custom-label {
  display: inline-block;
  position: relative;
  vertical-align: middle;
  margin: 5px;
  cursor: pointer;
}
.checkbox-custom + .checkbox-custom-label:before {
  content: '';
  background: #fff;
  border-radius: 5px;
  border: 2px solid #ddd;
  display: inline-block;
  vertical-align: middle;
  width: 10px; height: 10px;
  padding: 2px; margin-right: 10px;
}
.checkbox-custom:checked + .checkbox-custom-label:after {
  content: "";
  padding: 2px;
  position: absolute;
  width: 1px;
  height: 5px;
  border: solid blue;
  border-width: 0 3px 3px 0;
  transform: rotate(45deg);
  top: 2px; left: 5px;
}

<h3>Checkboxes</h3>
<div>
  <input id="checkbox-1" class="checkbox-custom" name="checkbox-1" type="checkbox">
  <label for="checkbox-1" class="checkbox-custom-label">First Choice</label>
</div>
<div>
  <input id="checkbox-2" class="checkbox-custom" name="checkbox-2" type="checkbox">
  <label for="checkbox-2" class="checkbox-custom-label">Second Choice</label>
</div>

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