js逐步实现原生控制系统

<h1>Update CSS Variables with <span>JS</span></h1>
	<form class="controls">
		<label for="spacing">Spacing:</label>
		<input type="range" id="spacing" name="spacing" min="0" max="200" value="10" data-sizing="px">
		<label for="blur">Blur:</label>
		<input type="range" id="blur" name="blur" min="0" max="25" value="10" data-sizing="px">
		<label for="base">Base Color</label>
		<input type="color" name="base" id="base" value="#ffc600">
	</form>
	<div class="result">
		<div class="showText">{spacing:<label id="lw_spacing">#ffc600</label>}</div>
		<div class="showText">{blur:<label id="lw_blur">10px</label>}</div>
		<div class="showText">{base:<label id="lw_base">10px</label>}</div>
	</div>
	<img src="./img1.jpg" alt="">

*{padding: 0px;margin: 0px;}
		:root
		{
			--base:#ffc600;
			--spacing:10px;
			--blur:10px;
		}
		span
		{
			color: var(--base);
		}
		img
		{
			width: 1125px;
			height: 549px;
			padding: var(--spacing);
			background: var(--base);
			filter: blur(var(--blur));
		}
		body
		{
			text-align: center;
			background: #193549;
			color: white;
			font-family:'helvetica neue',sans-serif;
			font-weight: 100;
			font-size: 30px;
		}
		.controls
		{
			margin-bottom: 50px;
		}
		input
		{
			width: 100px;
		}
		.result
		{
			display: flex;
			flex-direction: row;
			justify-content: center;
			color: var(--base);
		}
		.showText
		{
			margin: 0px 25px 50px 25px;
		}