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CSS

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CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

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JavaScript

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Babel includes JSX processing.

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HTML 

              
                <div aria-label="Close" role="button" data-focusable="true" tabindex="0" class="css-18t94o4 css-1dbjc4n r-1niwhzg r-42olwf r-sdzlij r-1phboty r-rs99b7 r-1w2pmg r-1vuscfd r-53xb7h r-mk0yit r-o7ynqc r-6416eg r-lrvibr" style="margin-left: calc(5px + ((-1 * (41px - 1.5em)) / 2));">
	<div dir="auto" class="css-901oao r-1awozwy r-13gxpu9 r-6koalj r-18u37iz r-16y2uox r-1qd0xha r-a023e6 r-vw2c0b r-1777fci r-eljoum r-dnmrzs r-bcqeeo r-q4m81j r-qvutc0">
		<svg viewBox="0 0 24 24" class="r-13gxpu9 r-4qtqp9 r-yyyyoo r-1q142lx r-50lct3 r-dnmrzs r-bnwqim r-1plcrui r-lrvibr">
			<g>
				<path d="M13.414 12l5.793-5.793c.39-.39.39-1.023 0-1.414s-1.023-.39-1.414 0L12 10.586 6.207 4.793c-.39-.39-1.023-.39-1.414 0s-.39 1.023 0 1.414L10.586 12l-5.793 5.793c-.39.39-.39 1.023 0 1.414.195.195.45.293.707.293s.512-.098.707-.293L12 13.414l5.793 5.793c.195.195.45.293.707.293s.512-.098.707-.293c.39-.39.39-1.023 0-1.414L13.414 12z"></path>
			</g>
		</svg>
		<span class="css-901oao css-16my406 css-bfa6kz r-1qd0xha r-ad9z0x r-bcqeeo r-qvutc0"></span>
	</div>
</div>
!

CSS 

              
                .r-53xb7h {
	min-width: 39px;
}

.r-1vuscfd {
	min-height: 39px;
}

.r-6416eg {
	transition-property: background-color, box-shadow;
}

.r-o7ynqc {
	transition-duration: 0.2s;
}

.r-1niwhzg {
	background-color: rgba(0, 0, 0, 0);
}

.r-1w2pmg {
	height: 0px;
}

.r-lrvibr {
	-moz-user-select: none;
	-ms-user-select: none;
	-webkit-user-select: none;
	user-select: none;
}

.r-mk0yit {
	padding-left: 0px;
	padding-right: 0px;
}

.r-42olwf {
	border-bottom-color: rgba(0, 0, 0, 0);
	border-left-color: rgba(0, 0, 0, 0);
	border-right-color: rgba(0, 0, 0, 0);
	border-top-color: rgba(0, 0, 0, 0);
}

.r-rs99b7 {
	border-bottom-width: 1px;
	border-left-width: 1px;
	border-right-width: 1px;
	border-top-width: 1px;
}

.r-1phboty {
	border-bottom-style: solid;
	border-left-style: solid;
	border-right-style: solid;
	border-top-style: solid;
}

.r-sdzlij {
	border-bottom-left-radius: 9999px;
	border-bottom-right-radius: 9999px;
	border-top-left-radius: 9999px;
	border-top-right-radius: 9999px;
}

.css-1dbjc4n {
	-ms-flex-align: stretch;
	-ms-flex-direction: column;
	-ms-flex-negative: 0;
	-ms-flex-preferred-size: auto;
	-webkit-align-items: stretch;
	-webkit-box-align: stretch;
	-webkit-box-direction: normal;
	-webkit-box-orient: vertical;
	-webkit-flex-basis: auto;
	-webkit-flex-direction: column;
	-webkit-flex-shrink: 0;
	align-items: stretch;
	border: 0 solid black;
	box-sizing: border-box;
	display: -webkit-box;
	display: -moz-box;
	display: -ms-flexbox;
	display: -webkit-flex;
	display: flex;
	flex-basis: auto;
	flex-direction: column;
	flex-shrink: 0;
	margin-bottom: 0px;
	margin-left: 0px;
	margin-right: 0px;
	margin-top: 0px;
	min-height: 0px;
	min-width: 0px;
	padding-bottom: 0px;
	padding-left: 0px;
	padding-right: 0px;
	padding-top: 0px;
	position: relative;
	z-index: 0;
}

.css-18t94o4 {
	cursor: pointer;
}

.r-eljoum {
	line-height: 1;
}

.r-vw2c0b {
	font-weight: bold;
}

.r-a023e6 {
	font-size: 15px;
}

.r-1qd0xha {
	font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", sans-serif;
}

.r-qvutc0 {
	overflow-wrap: break-word;
}

.r-bcqeeo {
	min-width: 0px;
}

.r-1awozwy {
	-webkit-box-align: center;
	align-items: center;
}

.r-1777fci {
	-webkit-box-pack: center;
	justify-content: center;
}

.r-16y2uox {
	-webkit-box-flex: 1;
	flex-grow: 1;
}

.r-18u37iz {
	-webkit-box-direction: normal;
	-webkit-box-orient: horizontal;
	flex-direction: row;
}

.r-q4m81j {
	text-align: center;
}

.r-13gxpu9 {
	color: rgba(29,161,242,1.00);
}

.r-dnmrzs {
	max-width: 100%;
}

.r-6koalj {
	display: flex;
}

.css-901oao {
	border: 0 solid black;
	box-sizing: border-box;
	color: rgba(0,0,0,1.00);
	display: inline;
	font: 14px system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Ubuntu,"Helvetica Neue",sans-serif;
	margin-bottom: 0px;
	margin-left: 0px;
	margin-right: 0px;
	margin-top: 0px;
	padding-bottom: 0px;
	padding-left: 0px;
	padding-right: 0px;
	padding-top: 0px;
	white-space: pre-wrap;
	word-wrap: break-word;
}

.r-50lct3 {
	height: 1.5em;
}

.r-1q142lx {
	flex-shrink: 0;
}

.r-13gxpu9 {
	color: rgba(29,161,242,1.00);
}

.r-lrvibr {
	-moz-user-select: none;
	-ms-user-select: none;
	-webkit-user-select: none;
	user-select: none;
}

.r-1plcrui {
	vertical-align: text-bottom;
}

.r-bnwqim {
	position: relative;
}

.r-dnmrzs {
	max-width: 100%;
}

.r-yyyyoo {
	fill: currentcolor;
}

.r-4qtqp9 {
	display: inline-block;
}

.r-1qd0xha {
	font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", sans-serif;
}

.r-qvutc0 {
	overflow-wrap: break-word;
}

.r-bcqeeo {
	min-width: 0px;
}

.r-ad9z0x {
	line-height: 1.3125;
}

.css-bfa6kz {
	max-width: 100%;
	overflow-x: hidden;
	overflow-y: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.css-16my406 {
	color: inherit;
	font: inherit;
	white-space: inherit;
}

.css-901oao {
	border: 0 solid black;
	box-sizing: border-box;
	color: rgba(0,0,0,1.00);
	display: inline;
	font: 14px system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Ubuntu,"Helvetica Neue",sans-serif;
	margin-bottom: 0px;
	margin-left: 0px;
	margin-right: 0px;
	margin-top: 0px;
	padding-bottom: 0px;
	padding-left: 0px;
	padding-right: 0px;
	padding-top: 0px;
	white-space: pre-wrap;
	word-wrap: break-word;
}
!

JS
!
999px

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