HTML,CSS 复选框标签位置应在复选框之上

Question

美好的一天，我不擅长 CSS，我很难将复选框标签放置在复选框本身的顶部。你能帮我么？我希望它的标签也是中心格式的文本，因为我还想使用 jquery 动态更改文本。如果我选中它，“Fix”文本将变为“Fixed”，并且该文本应保持在复选框顶部的居中位置。这是我的 JSFIDDLE >>> https://jsfiddle.net/koykoys/d2cb96xo/ .

**注意：请不要修改“html”部分，只修改“css”部分。

谢谢。

input[type="checkbox"]:not(:checked),
input[type="checkbox"]:checked {
  position: absolute;
  left: -9999px;
}
input[type="checkbox"]:not(:checked) + label,
input[type="checkbox"]:checked + label{
  position: relative;
  padding-left: 50px;
  cursor: pointer;
}


/* checkbox aspect */
input[type="checkbox"]:not(:checked) + label:before,
input[type="checkbox"]:checked + label:before {
  content: '';
  position: absolute;
  left:0; top: 2px;
  width: 40px; height: 40px;
  background: #f8f8f8;
  border-radius: 3px;
  border: 2px solid #aaa;
  -webkit-box-shadow: groove 0 0 13px rgba(0, 0, 0, 0.5);
  box-shadow: groove 0 0 13px rgba(0, 0, 0, 0.5);
}
/* checked mark aspect */
input[type="checkbox"]:not(:checked) + label:after,
input[type="checkbox"]:checked + label:after {
  content: '✔';
  position: absolute;
  top: 0; left: 5px;
  font-size: 34px;
  color: green;
  transition: all .2s;
  -webkit-transition: all .2s;
  -moz-transition: all .2s;
  -ms-transition: all .2s;
  -o-transition: all .2s;
}
/* checked mark aspect changes */
input[type="checkbox"]:not(:checked) + label:after {
  opacity: 0;
  transform: scale(0);
}
input[type="checkbox"]:checked + label:after {
  opacity: 1;
  transform: scale(1);
}

<div class="col-md-12">
   <input id="checkid"  type="checkbox">
   <label for="checkid">Fixed</label>
</div>

Answer 1

这将使标签在“复选框”上方居中（实际上不再是input type="checkbox"，因为您在标签上使用伪元素来直观地替换它）。

input[type="checkbox"]:not(:checked),
input[type="checkbox"]:checked {
  position: absolute;
  left: -9999px;
}
input[type="checkbox"]:not(:checked) + label,
input[type="checkbox"]:checked + label{
  position: relative;
  cursor: pointer;
  display: inline-block;
  padding-bottom: 50px;
}


/* checkbox aspect */
input[type="checkbox"]:not(:checked) + label:before,
input[type="checkbox"]:checked + label:before {
  content: '';
  position: absolute;
  left:50%; top: 20px;
  width: 40px; height: 40px;
  background: #f8f8f8;
  border-radius: 3px;
  border: 2px solid #aaa;
  -webkit-box-shadow: groove 0 0 13px rgba(0, 0, 0, 0.5);
  box-shadow: groove 0 0 13px rgba(0, 0, 0, 0.5);
  transform: translateX(-50%);
}
/* checked mark aspect */
input[type="checkbox"]:not(:checked) + label:after,
input[type="checkbox"]:checked + label:after {
  content: '✔';
  position: absolute;
  top: 20px; left: 0;
  right: 0;
  font-size: 34px;
  color: green;
  transition: all .2s;
  -webkit-transition: all .2s;
  -moz-transition: all .2s;
  -ms-transition: all .2s;
  -o-transition: all .2s;
  text-align: center;
}
/* checked mark aspect changes */
input[type="checkbox"]:not(:checked) + label:after {
  opacity: 0;
  transform: scale(0);
}
input[type="checkbox"]:checked + label:after {
  opacity: 1;
  transform: scale(1);
}

<div class="col-md-12">
   <input id="checkid"  type="checkbox">
   <label for="checkid">Fixed</label>
</div>

<div class="col-md-12">
   <input id="checkid2"  type="checkbox">
   <label for="checkid2">Label can now vary in length</label>
</div>

Answer 2

简单地做一些对齐删除填充和调整位置

input[type="checkbox"]:not(:checked), input[type="checkbox"]:checked {
	position: absolute;
	left: -9999px;
}
input[type="checkbox"]:not(:checked) + label, input[type="checkbox"]:checked + label {
	position: relative;
	cursor: pointer;
}
/* checkbox aspect */
input[type="checkbox"]:not(:checked) + label:before, input[type="checkbox"]:checked + label:before {
	content: '';
	position: absolute;
	left: 0;
	top: 22px;
	width: 40px;
	height: 40px;
	background: #f8f8f8;
	border-radius: 3px;
	border: 2px solid #aaa;
	-webkit-box-shadow: groove 0 0 13px rgba(0, 0, 0, 0.5);
	box-shadow: groove 0 0 13px rgba(0, 0, 0, 0.5);
}
/* checked mark aspect */
input[type="checkbox"]:not(:checked) + label:after, input[type="checkbox"]:checked + label:after {
	content: '✔';
	position: absolute;
	top: 16px;
	left: 10px;
	font-size: 34px;
	color: green;
	transition: all .2s;
	-webkit-transition: all .2s;
	-moz-transition: all .2s;
	-ms-transition: all .2s;
	-o-transition: all .2s;
}
/* checked mark aspect changes */
input[type="checkbox"]:not(:checked) + label:after {
	opacity: 0;
	transform: scale(0);
}
input[type="checkbox"]:checked + label:after {
	opacity: 1;
	transform: scale(1);
}

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Untitled Document</title>

</head>

<body>
<div class="col-md-12">
  <input id="checkid"  type="checkbox">
  <label for="checkid">Fixed</label>
</div>
</body>
</html>

Answer 3

假设您实际上希望您的 <label> 元素位于您的复选框之上（如您的问题状态），并且您不想像这里的其他答案那样垂直对齐标签的文本：只需设置您的伪将top 属性设置为100% 的元素（这会将它们直接放在<label> 元素下方），然后给<label> 元素一些底部margin 将任何进一步的元素向下推一点（给伪元素的空间），然后将<label> 设置为display 作为block。

input[type="checkbox"]:not(:checked),
input[type="checkbox"]:checked {
  position: absolute;
  left: -9999px;
}
input[type="checkbox"]:not(:checked) + label,
input[type="checkbox"]:checked + label{
  position: relative;
  margin-bottom: 50px;
  padding-bottom: 4px;
  cursor: pointer;
  display: block;
}


/* checkbox aspect */
input[type="checkbox"]:not(:checked) + label:before,
input[type="checkbox"]:checked + label:before {
  content: '';
  position: absolute;
  left:0; top: 100%;
  width: 40px; height: 40px;
  background: #f8f8f8;
  border-radius: 3px;
  border: 2px solid #aaa;
  -webkit-box-shadow: groove 0 0 13px rgba(0, 0, 0, 0.5);
  box-shadow: groove 0 0 13px rgba(0, 0, 0, 0.5);
}
/* checked mark aspect */
input[type="checkbox"]:not(:checked) + label:after,
input[type="checkbox"]:checked + label:after {
  content: '✔';
  position: absolute;
  top: 100%; left: 5px;
  font-size: 34px;
  color: green;
  transition: all .2s;
  -webkit-transition: all .2s;
  -moz-transition: all .2s;
  -ms-transition: all .2s;
  -o-transition: all .2s;
}
/* checked mark aspect changes */
input[type="checkbox"]:not(:checked) + label:after {
  opacity: 0;
  transform: scale(0);
}
input[type="checkbox"]:checked + label:after {
  opacity: 1;
  transform: scale(1);
}

<div class="col-md-12">
   <input id="checkid"  type="checkbox">
   <label for="checkid">Fixed</label>
</div>

Answer 4

我添加了一个margin-top: 50px 来强制框向下并为标签留出空间。这是完整的 CSS，我不编辑您的原始代码，我只添加了一些行。我在添加的行中写了 cmets。

input[type="checkbox"]:not(:checked),
input[type="checkbox"]:checked {
  position: absolute;
  left: -9999px;
  /* added */
  opacity: 0;
}
input[type="checkbox"]:not(:checked) + label,
input[type="checkbox"]:checked + label{
  position: relative;
  padding-left: 50px;
  cursor: pointer;
  /* added */
  text-align: center;
  padding-left: 4px;
}


/* checkbox aspect */
input[type="checkbox"]:not(:checked) + label:before,
input[type="checkbox"]:checked + label:before {
  content: '';
  position: absolute;
  left:0; top: 2px;
  width: 40px; height: 40px;
  background: #f8f8f8;
  border-radius: 3px;
  border: 2px solid #aaa;
  -webkit-box-shadow: groove 0 0 13px rgba(0, 0, 0, 0.5);
  box-shadow: groove 0 0 13px rgba(0, 0, 0, 0.5);
  /* added */
  margin-top: 20px;
}
/* checked mark aspect */
input[type="checkbox"]:not(:checked) + label:after,
input[type="checkbox"]:checked + label:after {
  content: '✔';
  position: absolute;
  top: 0; left: 5px;
  font-size: 34px;
  color: green;
  transition: all .2s;
  -webkit-transition: all .2s;
  -moz-transition: all .2s;
  -ms-transition: all .2s;
  -o-transition: all .2s;
  /* added */
  margin-top: 20px;
}
/* checked mark aspect changes */
input[type="checkbox"]:not(:checked) + label:after {
  opacity: 0;
  transform: scale(0);
}
input[type="checkbox"]:checked + label:after {
  opacity: 1;
  transform: scale(1);
}

Answer 5

你为什么不尝试一些简单的东西............把你的标签放在上面并添加一个“br”

 <!DOCTYPE html>
    <html>
    <body>

     <form action="demo_form.asp" method="get"><lable>asdf</lable><br>
     <input type="checkbox" name="vehicle" value="Bike"><br>

     <input type="submit" value="Submit">
    </form>

    </body>
    </html>

Answer 6

只需添加：

input[type="checkbox"]:not(:checked) + label,
input[type="checkbox"]:checked + label {
    padding-top: 11px;
}