Untitled

dabblet.css

.toggle-switch {
	display: inline-block;
	position: relative;
	border-radius: 20px;
	background-color: #E6E6E6;
	padding: 10px;
	-webkit-user-select:none;
	-moz-user-select:none;
	-ms-user-select: none;
}
.toggle-switch input {
	display: none;
}
.toggle-switch label {
	font-family: sans-serif;
	text-transform: uppercase;
	font-size: 14px;
	font-weight: bold;
	position: relative;
}
.toggle-switch label:before {
	content: "";
	display: block;
	position: absolute;
	z-index: 50;
	background-color: white;
	width: 100px;
	height: 100%;
	padding: 10px;
	top: -10px;
	left: -10px;
	right: auto;
	border-radius: 20px;
	transition: all 0.2s linear;
	box-shadow: 0px 1px 5px gray;
}
.toggle-switch input:checked + label:before {
	left: 100%;
	margin-left: -111px
}
.toggle-switch span {
	display: inline-block;
	width: 100px;
	text-align: center;
	position: relative;
	z-index: 100;
}
.toggle-switch .toggle-switch-off {
	color: #0066CC;
}

dabblet.html

<div class="toggle-switch">
	<input type="checkbox" id="toggle-switch-01"/>
	<label for="toggle-switch-01">
		<span class="toggle-switch-on">Edit</span>
		<span class="toggle-switch-off">Preview</span>
	</label>
</div>

dabblet.js

// alert('Hello world!');

settings.json

{"view":"split","fontsize":"100","seethrough":"","prefixfree":"1","page":"all"}