向CSS复选框开关添加文本

Question

我正在尝试设计一个复选框，它看起来像一个只使用CSS的开关，并尽可能多地使用em，这样它就可以缩放到任何大小，并且看起来仍然很好。

我有一个看起来很锋利，我只想在开关内部添加"ON"/"OFF"之类的文本，这就是我需要你帮助的地方。

到目前为止，我拥有的是：

JSfiddle：https://jsfiddle.net/rcsngjhm/2/

.switch {
  display: table-cell;
  vertical-align: middle;
  padding: 10px;
}
.cmn-toggle {
  position: absolute;
  margin-left: -9999px;
  visibility: hidden;
}
.cmn-toggle + label {
  display: block;
  position: relative;
  cursor: pointer;
  outline: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}
input.cmn-toggle-jwr + label {
  width: 3em;
  height: 1.5em;
  background-color: #dddddd;
  -webkit-border-radius: 1.5em;
  -moz-border-radius: 1.5em;
  -ms-border-radius: 1.5em;
  -o-border-radius: 1.5em;
  border-radius: 1.5em;
  overflow: hidden;
}
input.cmn-toggle-jwr + label:before,
input.cmn-toggle-jwr + label:after {
  display: block;
  position: absolute;
  top: 1px;
  left: 1px;
  bottom: 1px;
  content: "";
}
input.cmn-toggle-jwr + label:before {
  right: 1px;
  background-color: #f1f1f1;
  -webkit-border-radius: 1.5em;
  -moz-border-radius: 1.5em;
  -ms-border-radius: 1.5em;
  -o-border-radius: 1.5em;
  border-radius: 1.5em;
  -webkit-transition: background 0.3s;
  -moz-transition: background 0.3s;
  -o-transition: background 0.3s;
  transition: background 0.3s;
}
input.cmn-toggle-jwr + label:after {
  width: 1.5em;
  width: calc(1.5em - 2px);
  background-color: #fff;
  -webkit-border-radius: 100%;
  -moz-border-radius: 100%;
  -ms-border-radius: 100%;
  -o-border-radius: 100%;
  border-radius: 100%;
  -webkit-box-shadow: 1px 0 3px rgba(0, 0, 0, 0.1);
  -moz-box-shadow: 1px 0 3px rgba(0, 0, 0, 0.1);
  box-shadow: 1px 0 3px rgba(0, 0, 0, 0.1);
  -webkit-transition: margin 0.3s;
  -moz-transition: margin 0.3s;
  -o-transition: margin 0.3s;
  transition: margin 0.3s;
}
input.cmn-toggle-jwr:checked + label:before {
  background-color: #8ce196;
}
input.cmn-toggle-jwr:checked + label:after {
  margin-left: 1.5em;
}

<div class="switch">
  <input id="cmn-toggle-1" class="cmn-toggle cmn-toggle-jwr" type="checkbox">
  <label for="cmn-toggle-1"></label>
</div>

另外，如果你觉得我有什么办法可以多清理一下，请告诉我。

Answer 1

我对CSS进行了一些修改，试图将文本放在开关中。

根据您希望文本的大小，您可能需要调整字体大小、边距等。

查看更新的fiddle

.em1-0 {
  font-size: 1em;
}
.em4-0 {
  font-size: 4em;
}
.switch {
  display: table-cell;
  vertical-align: middle;
  padding: 10px;
}
.cmn-toggle {
  position: absolute;
  margin-left: -9999px;
  visibility: hidden;
}
.cmn-toggle + label {
  display: block;
  position: relative;
  cursor: pointer;
  outline: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}
input.cmn-toggle-jwr + label {
  width: 3em;
  height: 1.5em;
  background-color: #dddddd;
  -webkit-border-radius: 1.5em;
  -moz-border-radius: 1.5em;
  -ms-border-radius: 1.5em;
  -o-border-radius: 1.5em;
  border-radius: 1.5em;
  overflow: hidden;
}
input.cmn-toggle-jwr + label:before,
input.cmn-toggle-jwr + label:after {
  display: block;
  position: absolute;
  top: 1px;
  left: 1px;
  bottom: 1px;
  content: "";
}
input.cmn-toggle-jwr + label:before {
  right: 1px;
  background-color: #f1f1f1;
  -webkit-border-radius: 1.5em;
  -moz-border-radius: 1.5em;
  -ms-border-radius: 1.5em;
  -o-border-radius: 1.5em;
  border-radius: 1.5em;
  -webkit-transition: background 0.3s;
  -moz-transition: background 0.3s;
  -o-transition: background 0.3s;
  transition: background 0.3s;
  /* added these four */
  font-size: 0.75em;
  content:"off";
  text-align: right;
  padding: 0.25em 0.35em;
}
input.cmn-toggle-jwr + label:after {
  width: 1.5em;
  width: calc(1.5em - 2px);
  background-color: #fff;
  -webkit-border-radius: 100%;
  -moz-border-radius: 100%;
  -ms-border-radius: 100%;
  -o-border-radius: 100%;
  border-radius: 100%;
  -webkit-box-shadow: 1px 0 3px rgba(0, 0, 0, 0.1);
  -moz-box-shadow: 1px 0 3px rgba(0, 0, 0, 0.1);
  box-shadow: 1px 0 3px rgba(0, 0, 0, 0.1);
  -webkit-transition: margin 0.3s;
  -moz-transition: margin 0.3s;
  -o-transition: margin 0.3s;
  transition: margin 0.3s;
}
input.cmn-toggle-jwr:checked + label:before {
  background-color: #8ce196;
  /* added these two */
  content: "on";
  text-align:left;
}
input.cmn-toggle-jwr:checked + label:after {
  margin-left: 1.5em;
}

<div class="switch em4-0">
  <input id="cmn-toggle-0" class="cmn-toggle cmn-toggle-jwr" type="checkbox">
  <label for="cmn-toggle-0"></label>
</div>
<br />
<div class="switch em1-0">
  <input id="cmn-toggle-1" class="cmn-toggle cmn-toggle-jwr" type="checkbox">
  <label for="cmn-toggle-1">on</label>
</div>