单选框样式

以下是几种单选框样式：

1. 原生单选框样式：

<input type="radio" name="radioGroup" id="radio1" value="option1">
<label for="radio1">Option 1</label>
<input type="radio" name="radioGroup" id="radio2" value="option2">
<label for="radio2">Option 2</label>

2. 自定义样式的单选框：

<style>
.custom-radio {
  display: inline-block;
  position: relative;
  padding-left: 28px;
  margin-bottom: 12px;
  cursor: pointer;
  font-size: 16px;
  user-select: none;
}

.custom-radio input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
}

.checkmark {
  position: absolute;
  top: 0;
  left: 0;
  height: 20px;
  width: 20px;
  background-color: #eee;
  border-radius: 50%;
}

.custom-radio:hover input ~ .checkmark {
  background-color: #ccc;
}

.custom-radio input:checked ~ .checkmark {
  background-color: #2196F3;
}

.checkmark:after {
  content: "";
  position: absolute;
  display: none;
}

.custom-radio input:checked ~ .checkmark:after {
  display: block;
}

.custom-radio .checkmark:after {
  top: 6px;
  left: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: white;
}
</style>

<label class="custom-radio">
  <input type="radio" name="radioGroup" value="option1">
  <span class="checkmark"></span>
  Option 1
</label>

<label class="custom-radio">
  <input type="radio" name="radioGroup" value="option2">
  <span class="checkmark"></span>
  Option 2
</label>

3. 使用 CSS 伪元素的单选框：

<style>
.radio-container {
  display: inline-block;
  margin-right: 10px;
}

.radio-container input[type="radio"] {
  display: none;
}

.radio-container label {
  display: inline-block;
  margin-right: 5px;
  padding-left: 25px;
  position: relative;
  cursor: pointer;
  font-size: 16px;
  user-select: none;
}

.radio-container label:before {
  content: "";
  display: inline-block;
  height: 16px;
  width: 16px;
  border-radius: 50%;
  border: 2px solid #ccc;
  position: absolute;
  left: 0;
  top: 2px;
}

.radio-container label:after {
  content: "";
  display: none;
  height: 8px;
  width: 8px;
  border-radius: 50%;
  background-color: #2196F3;
  position: absolute;
  left: 4px;
  top: 6px;
}

.radio-container input[type="radio"]:checked + label:after {
  display: block;
}
</style>

<div class="radio-container">
  <input type="radio" name="radioGroup" id="radio1" value="option1">
  <label for="radio1">Option 1</label>
</div>

<div class="radio-container">
  <input type="radio" name="radioGroup" id="radio2" value="option2">
  <label for="radio2">Option 2</label>
</div>