我可以改变复选框的大小使用CSS?

小开

我的理解是，跨浏览器操作一点也不容易。您可以使用图像、javascript和隐藏的输入字段构建自己的实现，而不是尝试操作复选框控件。我假设这类似于niceforms(来自上面Staicu lonut的回答)，但实现起来并不特别困难。我相信jQuery也有一个插件允许这种自定义行为(如果我能找到的话，我会在这里寻找链接和帖子)。

小开

您可以使用这个属性:-webkit-transform: scale(1.3, 1.3);在Safari中使复选框变大——这通常对常规方法有抵抗性

Source .

小开

它有点丑(由于缩放)，但它适用于大多数更新的浏览器:

input[type=checkbox]
{
/* Double-sized Checkboxes */
-ms-transform: scale(2); /* IE */
-moz-transform: scale(2); /* FF */
-webkit-transform: scale(2); /* Safari and Chrome */
-o-transform: scale(2); /* Opera */
transform: scale(2);
padding: 10px;
}


/* Might want to wrap a span around your checkbox text */
.checkboxtext
{
/* Checkbox text */
font-size: 110%;
display: inline;
}

<input  type="checkbox" name="optiona" id="opta" checked />
<span class="checkboxtext">
Option A
</span>
<input type="checkbox" name="optionb" id="optb" />
<span class="checkboxtext">
Option B
</span>
<input type="checkbox" name="optionc" id="optc" />
<span class="checkboxtext">
Option C
</span>

小开

预览: # EYZ0

*,*:after,*:before {
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
padding: 0;
margin: 0;
}


.switch {
margin: 50px auto;
position: relative;
}


.switch label {
width: 100%;
height: 100%;
position: relative;
display: block;
}


.switch input {
top: 0;
right: 0;
bottom: 0;
left: 0;
opacity: 0;
z-index: 100;
position: absolute;
width: 100%;
height: 100%;
cursor: pointer;
}


/* DEMO 3 */


.switch.demo3 {
width: 180px;
height: 50px;
}


.switch.demo3 label {
display: block;
width: 100%;
height: 100%;
background: #a5a39d;
border-radius: 40px;
box-shadow:
inset 0 3px 8px 1px rgba(0,0,0,0.2),
0 1px 0 rgba(255,255,255,0.5);
}


.switch.demo3 label:after {
content: "";
position: absolute;
z-index: -1;
top: -8px; right: -8px; bottom: -8px; left: -8px;
border-radius: inherit;
background: #ababab;
background: -moz-linear-gradient(#f2f2f2, #ababab);
background: -ms-linear-gradient(#f2f2f2, #ababab);
background: -o-linear-gradient(#f2f2f2, #ababab);
background: -webkit-gradient(linear, 0 0, 0 100%, from(#f2f2f2), to(#ababab));
background: -webkit-linear-gradient(#f2f2f2, #ababab);
background: linear-gradient(#f2f2f2, #ababab);
box-shadow: 0 0 10px rgba(0,0,0,0.3),
0 1px 1px rgba(0,0,0,0.25);
}


.switch.demo3 label:before {
content: "";
position: absolute;
z-index: -1;
top: -18px; right: -18px; bottom: -18px; left: -18px;
border-radius: inherit;
background: #eee;
background: -moz-linear-gradient(#e5e7e6, #eee);
background: -ms-linear-gradient(#e5e7e6, #eee);
background: -o-linear-gradient(#e5e7e6, #eee);
background: -webkit-gradient(linear, 0 0, 0 100%, from(#e5e7e6), to(#eee));
background: -webkit-linear-gradient(#e5e7e6, #eee);
background: linear-gradient(#e5e7e6, #eee);
box-shadow:
0 1px 0 rgba(255,255,255,0.5);
-webkit-filter: blur(1px);
-moz-filter: blur(1px);
-ms-filter: blur(1px);
-o-filter: blur(1px);
filter: blur(1px);
}


.switch.demo3 label i {
display: block;
height: 100%;
width: 60%;
border-radius: inherit;
background: silver;
position: absolute;
z-index: 2;
right: 40%;
top: 0;
background: #b2ac9e;
background: -moz-linear-gradient(#f7f2f6, #b2ac9e);
background: -ms-linear-gradient(#f7f2f6, #b2ac9e);
background: -o-linear-gradient(#f7f2f6, #b2ac9e);
background: -webkit-gradient(linear, 0 0, 0 100%, from(#f7f2f6), to(#b2ac9e));
background: -webkit-linear-gradient(#f7f2f6, #b2ac9e);
background: linear-gradient(#f7f2f6, #b2ac9e);
box-shadow:
inset 0 1px 0 white,
0 0 8px rgba(0,0,0,0.3),
0 5px 5px rgba(0,0,0,0.2);
}


.switch.demo3 label i:after {
content: "";
position: absolute;
left: 15%;
top: 25%;
width: 70%;
height: 50%;
background: #d2cbc3;
background: -moz-linear-gradient(#cbc7bc, #d2cbc3);
background: -ms-linear-gradient(#cbc7bc, #d2cbc3);
background: -o-linear-gradient(#cbc7bc, #d2cbc3);
background: -webkit-gradient(linear, 0 0, 0 100%, from(#cbc7bc), to(#d2cbc3));
background: -webkit-linear-gradient(#cbc7bc, #d2cbc3);
background: linear-gradient(#cbc7bc, #d2cbc3);
border-radius: inherit;
}


.switch.demo3 label i:before {
content: "off";
text-transform: uppercase;
font-style: normal;
font-weight: bold;
color: rgba(0,0,0,0.4);
text-shadow: 0 1px 0 #bcb8ae, 0 -1px 0 #97958e;
font-family: Helvetica, Arial, sans-serif;
font-size: 24px;
position: absolute;
top: 50%;
margin-top: -12px;
right: -50%;
}


.switch.demo3 input:checked ~ label {
background: #9abb82;
}


.switch.demo3 input:checked ~ label i {
right: -1%;
}


.switch.demo3 input:checked ~ label i:before {
content: "on";
right: 115%;
color: #82a06a;
text-shadow:
0 1px 0 #afcb9b,
0 -1px 0 #6b8659;
}

<div class="switch demo3">
<input type="checkbox">
<label><i></i>
</label>
</div>


<div class="switch demo3">
<input type="checkbox" checked>
<label><i></i>
</label>
</div>

小开

一个简单的解决方案是使用属性zoom:

input[type="checkbox"] {
zoom: 1.5;
}

<input type="checkbox" />

小开

我想做一个复选框，只是稍大一点，并查看37Signals Basecamp的源代码，以找到以下解决方案-

您可以更改字体大小，使复选框略大:

font-size: x-large;

然后，你可以正确对齐复选框，这样做:

vertical-align: top;
margin-top: 3px; /* change to center it */

小开

适用于所有现代浏览器的解决方案。

input[type=checkbox] {
transform: scale(1.5);
}

<label><input type="checkbox"> Test</label>

Compatibility:

IE: 10+
FF: 16+
Chrome: 36+
Safari: 9+
Opera: 23+
iOS Safari: 9.2+
Chrome for Android: 51+

Appearance:

Chrome 58 (May 2017), Windows 10

小开

其他答案显示了一个像素的复选框，而我想要一些漂亮的东西。结果如下所示: # EYZ0

尽管这个版本更复杂，但我认为值得一试。

.checkbox-list__item {
position: relative;
padding: 10px 0;
display: block;
cursor: pointer;
margin: 0 0 0 34px;
border-bottom: 1px solid #b4bcc2;
}
.checkbox-list__item:last-of-type {
border-bottom: 0;
}


.checkbox-list__check {
width: 18px;
height: 18px;
border: 3px solid #b4bcc2;
position: absolute;
left: -34px;
top: 50%;
margin-top: -12px;
transition: border .3s ease;
border-radius: 5px;
}
.checkbox-list__check:before {
position: absolute;
display: block;
width: 18px;
height: 22px;
top: -2px;
left: 0px;
padding-left: 2px;
background-color: transparent;
transition: background-color .3s ease;
content: '\2713';
font-family: initial;
font-size: 19px;
color: white;
}


input[type="checkbox"]:checked ~ .checkbox-list__check {
border-color: #5bc0de;
}
input[type="checkbox"]:checked ~ .checkbox-list__check:before {
background-color: #5bc0de;
}

<label class="checkbox-list__item">
<input class="checkbox_buttons" type="checkbox" checked="checked" style="display: none;">
<div class="checkbox-list__check"></div>
</label>

JSFiddle: # EYZ0

小开

问题是Firefox不听宽度和高度。把它拆了，你就可以走了。

input[type=checkbox] {
width: 25px;
height: 25px;
-moz-appearance: none;
}

<label><input type="checkbox"> Test</label>

小开

2020年版 -使用伪元素，大小取决于字体大小。

默认复选框/单选是在屏幕外呈现的，但CSS创建的虚拟元素与默认元素非常相似。支持所有浏览器，无模糊。大小取决于字体大小。还支持键盘操作(空格，制表符)。

https://jsfiddle.net/ohf7nmzy/2/

body{
padding:0 20px;
}
.big{
font-size: 50px;
}


/* CSS below will force radio/checkbox size be same as font size */
label{
position: relative;
line-height: 1.4;
}
/* radio */
input[type=radio]{
width: 1em;
font-size: inherit;
margin: 0;
transform: translateX(-9999px);
}
input[type=radio] + label:before{
position: absolute;
content: '';
left: -1.3em;
top: 0;
width: 1em;
height: 1em;
margin: 0;
border:none;
border-radius: 50%;
background-color: #bbbbbb;
}
input[type=radio] + label:after{
position: absolute;
content: '';
left: -1.3em;
top: 0;
width: 1em;
height: 1em;
margin: 0;
border: none;
background-color: white;
border-radius: 50%;
transform: scale(0.8);
}
/*checked*/
input[type=radio]:checked + label:before{
position:absolute;
content:'';
left: -1.3em;
top: 0;
width: 1em;
height: 1em;
margin: 0;
border: none;
background-color: #3b88fd;
}
input[type=radio]:checked + label:after{
position: absolute;
content: '';
left: -1.3em;
top: 0;
width: 1em;
height: 1em;
margin: 0;
border: none;
background-color: white;
border-radius: 50%;
transform: scale(0.3);
}
/*focused*/
input[type=radio]:focus + label:before{
border: 0.2em solid #8eb9fb;
margin-top: -0.2em;
margin-left: -0.2em;
box-shadow: 0 0 0.3em #3b88fd;
}




/*checkbox/*/
input[type=checkbox]{
width: 1em;
font-size: inherit;
margin: 0;
transform: translateX(-9999px);
}
input[type=checkbox] + label:before{
position: absolute;
content: '';
left: -1.3em;
top: 0;
width: 1em;
height: 1em;
margin: 0;
border:none;
border-radius: 10%;
background-color: #bbbbbb;
}
input[type=checkbox] + label:after{
position: absolute;
content: '';
left: -1.3em;
top: 0;
width: 1em;
height: 1em;
margin: 0;
border: none;
background-color: white;
border-radius: 10%;
transform: scale(0.8);
}
/*checked*/
input[type=checkbox]:checked + label:before{
position:absolute;
content:'';
left: -1.3em;
top: 0;
width: 1em;
height: 1em;
margin: 0;
border: none;
background-color: #3b88fd;
}
input[type=checkbox]:checked + label:after{
position: absolute;
content: "\2713";
left: -1.3em;
top: 0;
width: 1em;
height: 1em;
margin: 0;
border: none;
background-color: #3b88fd;
border-radius: 10%;
color: white;
text-align: center;
line-height: 1;
}
/*focused*/
input[type=checkbox]:focus + label:before{
border: 0.1em solid #8eb9fb;
margin-top: -0.1em;
margin-left: -0.1em;
box-shadow: 0 0 0.2em #3b88fd;
}

<input type="checkbox" name="checkbox_1" id="ee" checked />
<label for="ee">Checkbox small</label>


<br />


<input type="checkbox" name="checkbox_2" id="ff" />
<label for="ff">Checkbox small</label>


<hr />


<div class="big">
<input type="checkbox" name="checkbox_3" id="gg" checked />
<label for="gg">Checkbox big</label>


<br />


<input type="checkbox" name="checkbox_4" id="hh" />
<label for="hh">Checkbox big</label>
</div>




<hr />




<input type="radio" name="radio_1" id="aa" value="1" checked />
<label for="aa">Radio small</label>


<br />


<input type="radio" name="radio_1" id="bb" value="2" />
<label for="bb">Radio small</label>


<hr />


<div class="big">
<input type="radio" name="radio_2" id="cc" value="1" checked />
<label for="cc">Radio big</label>


<br />


<input type="radio" name="radio_2" id="dd" value="2" />
<label for="dd">Radio big</label>
</div>

2017年版 -使用缩放或比例

浏览器将使用非标准的zoom功能，如果它是支持的(不错的质量)或标准的transform: scale(在Safari上模糊)作为后备。

https://jsfiddle.net/ksvx2txb/11/

@supports (zoom:2) {
input[type="radio"],  input[type=checkbox]{
zoom: 2;
}
}
@supports not (zoom:2) {
input[type="radio"],  input[type=checkbox]{
transform: scale(2);
margin: 15px;
}
}
label{
/* fix vertical align issues */
display: inline-block;
vertical-align: top;
margin-top: 10px;
}

<input type="radio" name="aa" value="1" id="aa" checked />
<label for="aa">Radio 1</label>
<br />
<input type="radio" name="aa" value="2" id="bb" />
<label for="bb">Radio 2</label>


<br /><br />


<input  type="checkbox" name="optiona" id="cc" checked />
<label for="cc">Checkbox 1</label>
<br />
<input  type="checkbox" name="optiona" id="dd" />
<label for="dd">Checkbox 1</label>

小开

我想说的是:

input[type="checkbox"] {display:none;}
input[type="checkbox"] + label:before {content:"☐";}
input:checked + label:before {content:"☑";}
label:hover {color:blue;}

<input id="check" type="checkbox" /><label for="check">Checkbox</label>

Of course, thanks to this, you can change the value of content to your needs and use an image if you wish or use another font...

The main interest here is that:

The checkbox size stays proportional to the text size
You can control the aspect, the color, the size of the checkbox
No extra HTML needed !
Only 3 lines of CSS needed (the last one is just to give you ideas)

Edit: As pointed out in the comment, the checkbox won't be accessible by key navigation. You should probably add tabindex=0 as a property for your label to make it focusable.

小开

我发现这个css库非常有用: # EYZ0

或者，你也可以像@Sharcoux发的帖子那样，用同样的基本概念自己动手。它基本上是:

隐藏正常的复选框(不透明度为0，放在它应该去的地方)
添加一个基于css的假复选框
选中的样式使用input:checked~div label
确保你的<label>是可点击使用for=yourinputID

.pretty {
position: relative;
margin: 1em;
}
.pretty input {
position: absolute;
left: 0;
top: 0;
min-width: 1em;
width: 100%;
height: 100%;
z-index: 2;
opacity: 0;
margin: 0;
padding: 0;
cursor: pointer;
}
.pretty-inner {
box-sizing: border-box;
position: relative;
}
.pretty-inner label {
position: initial;
display: inline-block;
font-weight: 400;
margin: 0;
text-indent: 1.5em;
min-width: calc(1em + 2px);
}
.pretty-inner label:after,
.pretty-inner label:before {
content: '';
width: calc(1em + 2px);
height: calc(1em + 2px);
display: block;
box-sizing: border-box;
border-radius: 0;
border: 1px solid transparent;
z-index: 0;
position: absolute;
left: 0;
top: 0;
background-color: transparent;
}
.pretty-inner label:before {
border-color: #bdc3c7;
}
.pretty input:checked~.pretty-inner label:after {
background-color: #00bb82;
width: calc(1em - 6px);
height: calc(1em - 6px);
top: 4px;
left: 4px;
}




/* Add checkmark character style */
.pretty input:checked~.pretty-inner.checkmark:after {
content: '\2713';
color: #fff;
position: absolute;
font-size: 0.65em;
left: 6px;
top: 3px;
}






body {
font-size: 20px;
font-family: sans-serif;
}

<div class="pretty">
<input type="checkbox" id="demo" name="demo">
<div class="pretty-inner"><label for="demo">I agree.</label></div>
</div>


<div class="pretty">
<input type="checkbox" id="demo" name="demo">
<div class="pretty-inner checkmark"><label for="demo">Please check the box.</label></div>
</div>

小开

您可以在下面的代码中更改高度和宽度

.checkmark {
position: absolute;
top: 0;
left: 0;
height: 20px;
width: 20px;
border-radius:5px;
border:1px solid #ff7e02;
}

<div class="check">


<label class="container1">Architecture/Landscape
                                          



<input type="checkbox" checked="checked">
                                          



<span class="checkmark"></span>
                                 



</label>
</div>

小开

默认情况下，复选框的外观似乎是固定的。但正如Worthy7指出的那样，这可以使用CSS appearance属性来补救。它将使复选框完全为空，因此您可以定义自己的外观。这样做的好处是:您可以使用现有的HTML代码。缺点:它是实验技术。Edge (legacy)和IE不使用自定义样式。

下面是需要的CSS样式:

input[type=checkbox] {
width: 14mm;
-webkit-appearance: none;
-moz-appearance: none;
height: 14mm;
border: 0.1mm solid black;
}


input[type=checkbox]:checked {
background-color: lightblue;
}


input[type=checkbox]:checked:after {
margin-left: 4.3mm;
margin-top: -0.4mm;
width: 3mm;
height: 10mm;
border: solid white;
border-width: 0 2mm 2mm 0;
-webkit-transform: rotate(45deg);
-moz-transform: rotate(45deg);
-ms-transform: rotate(45deg);
transform: rotate(45deg);
content: "";
display: inline-block;
}

<label><input type="checkbox"> Test</label>

Screenshots:

Chrome:

Firefox:

Edge:

Edge (legacy):

IE:

小开

我认为最简单的解决方案是像一些用户建议的那样重新设置复选框的样式。下面的CSS为我工作，只需要几行CSS，并回答OP问题:

input[type=checkbox] {
-webkit-appearance: none;
-moz-appearance: none;
vertical-align: middle;
width: 14px;
height: 14px;
font-size: 14px;
background-color: #eee;
}


input[type=checkbox]:checked:after {
position: relative;
bottom: 3px;
left: 1px;
color: blue;
content: "\2713"; /* check mark */
}

正如这篇文章中提到的，缩放属性似乎在Firefox上不起作用，并且转换可能会导致不希望看到的效果。

在Chrome和Firefox上测试，应该适用于所有现代浏览器。只需根据需要更改属性(颜色、大小、底部、左侧等)。希望能有所帮助!

小开

我的声誉有点太低，不能发表评论，但我对上面的Jack Miller的代码做了修改，以使它在你勾选和取消勾选时不改变大小。这给我带来了文本对齐问题。

    input[type=checkbox] {
width: 17px;
-webkit-appearance: none;
-moz-appearance: none;
height: 17px;
border: 1px solid black;
}


input[type=checkbox]:checked {
background-color: #F58027;
}


input[type=checkbox]:checked:after {
margin-left: 4px;
margin-top: -1px;
width: 4px;
height: 12px;
border: solid white;
border-width: 0 2px 2px 0;
-webkit-transform: rotate(45deg);
-moz-transform: rotate(45deg);
-ms-transform: rotate(45deg);
transform: rotate(45deg);
content: "";
display: inline-block;
}
input[type=checkbox]:after {
margin-left: 4px;
margin-top: -1px;
width: 4px;
height: 12px;
border: solid white;
border-width: 0;
-webkit-transform: rotate(45deg);
-moz-transform: rotate(45deg);
-ms-transform: rotate(45deg);
transform: rotate(45deg);
content: "";
display: inline-block;
}

<label><input type="checkbox"> Test</label>

小开

使用这个CSS代码

input[type=checkbox]
{
/* Double-sized Checkboxes */
-ms-transform: scale(1.5); /* IE */
-moz-transform: scale(1.5); /* FF */
-webkit-transform: scale(1.5); /* Safari and Chrome */
-o-transform: scale(1.5); /* Opera */
transform: scale(1.5);
padding: 10px;
}

小开

这应该可以

input {
width: 25px;
height: 25px;
}

对我来说，火狐浏览器、Chrome浏览器、iPhone的火狐浏览器、Chrome浏览器和Safari浏览器至少都是如此。