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HTML

              
                header Style Editor

section.container
	aside
		h4 sidebar
		form
		
			fieldset
				legend typeface
				label(for="textfield1") Name
				input#textfield1(type="text" value="SF Pro")
		
			fieldset
				legend color
				label(for="range1") lightness
				input#range1(type="range" min="0" max="100" value="50")
				
				label(for="range2") chroma
				input#range2(type="range" min="0" max="100" value="50")
				
				label(for="range3") hue
				input#range3(type="range" min="0" max="100" value="50")
				
			fieldset
				legend size
				label(for="range11") base size
				input#range11(type="range" min="0" max="100" value="50")
				
				label(for="range12") text scaling
				input#range12(type="range" min="0" max="100" value="50")
				
			fieldset
				legend Sensibility
				label(for="range4") hue spread
				input#range4(type="range" min="0" max="100" value="50")
				
				label(for="range5") chroma spread
				input#range5(type="range" min="0" max="100" value="50")
				
				label(for="range6") sunset shine
				input#range6(type="range" min="0" max="100" value="50")
				
				label(for="range7") steely desat
				input#range7(type="range" min="0" max="100" value="50")
				
				label(for="range8") density
				input#range8(type="range" min="0" max="100" value="50")
				
				label(for="range9") roundness
				input#range9(type="range" min="0" max="100" value="50")
				
				label(for="range10") gaps
				input#range10(type="range" min="0" max="100" value="50")
				
	main
		h4 main content
		
		section.component
			h1 Title
			h2 Headline
			h3 Section
			h4 Block
			span.label Label
			p Text #[strong strong]
			p #[small small]
			a(href="#") Link
		
		section.component
			button button
		
		section.component
			input#radio1(type="radio" name="radiobuttondemo" checked)
			label(for="radio1") Radio Button

			input#radio2(type="radio" name="radiobuttondemo")
			label(for="radio2") Radio Button
		
		section.component
			input#check1(type="checkbox")
			label(for="check1") Checkbox

			input#check2(type="checkbox")
			label(for="check2") Checkbox
			
		section.component
			label(for="dropdown") Dropdown
			select#dropdown(name="selectlist") 
				option(value="one") One
				option(value="two") Two
				option(value="three") Three
				
		section.component
			p
				label(for="textfield2") Text field
				input#textfield2(type="input")
			p
				label(for="textfield3") Text area
				textarea#textfield3
		
	
              
            
!

CSS

              
                @import "https://unpkg.com/open-props"; 
@import "https://unpkg.com/open-props/normalize.min.css"; 
@import "https://unpkg.com/open-props/buttons.min.css"; 

:root{
/* syntax to adjust colors programmatically */
	--primary: oklch(71.18% 0.165 246.71); /* bright blue */
	--transparent-blue: oklch(from var(--primary) l c h / 50%);
	--light-blue: oklch(from var(--primary), calc(l + 25) c h);
	--slider-color: #ccc;
}

html[data-theme="light"]{
	
}

.container{
	display: grid;
	grid-template-columns: max-content 1fr;
	width: 80vw;
	margin: 0 auto;
	gap: 2rem;
}

fieldset{
	display: flex;
	flex-direction: column;
	margin-bottom: .6rem;
}

input[type="range"]{
	transition: box-shadow 0.2s ease-in-out;
	overflow: hidden;
	height: 20px;
	-webkit-appearance: none;
	background-color: #eee;
	margin-bottom: .6rem;
}

/***** Chrome, Safari, Opera, and Edge Chromium *****/
input[type="range"]::-webkit-slider-runnable-track {
	-webkit-appearance: none;
	margin-top: -2px;
	transition: box-shadow 0.2s ease-in-out;
}

/******** Firefox ********/
input[type="range"]::-moz-range-track {
	-webkit-appearance: none;
	margin-top: -2px;
	transition: box-shadow 0.2s ease-in-out;
}

input[type="range"]::-webkit-slider-thumb{
	width: 10px;
	-webkit-appearance: none;
	height: 40px;
	cursor: ew-resize;
	background: #fff;
	box-shadow: -310px 0 0 320px var(--slider-color), inset 0 0 0 10px var(--slider-color);
	transition: box-shadow 0.2s ease-in-out;
	position: relative;
}

input[type="range"]::-moz-range-thumb{
	width: 10px;
	-webkit-appearance: none;
	height: 40px;
	cursor: ew-resize;
	background: #fff;
	box-shadow: -310px 0 0 320px var(--slider-color), inset 0 0 0 10px var(--slider-color);
	transition: box-shadow 0.2s ease-in-out;
	position: relative;
	outline: 0;
	border: 0;
}

.component{
/* 	border: 1px solid red; */
	border-radius: 10px;
	padding: var();
}
              
            
!

JS

              
                range1.oninput = e => { updateUI() };

function updateUI() { 
// 	update css here on range input
}

updateUI();
              
            
!
999px

Console