wp-calypso/client/devdocs/design/playground.scss

//Playground
.react-live {
	.prism-code {
		background: #000;
		box-sizing: border-box;
		color: #eaeaea;
		font-size: $font-body;
		line-height: 1.4;
		margin: 0;
		padding: 24px;
	}
}

.design__playground {
	margin: -24px;
	@include breakpoint-deprecated( ">960px" ) {
		margin: -32px;
	}
}

.design__editor {
	background: #000;
}

.design__error {
	background: rgba(0, 0, 0, 0.5);
	box-sizing: border-box;
	color: var(--color-error);
	position: sticky;
	top: 0;
}

.react-live-error,
.design__preview {
	padding: 24px;
	@include breakpoint-deprecated( ">960px" ) {
		padding: 32px;
	}
}

.design__preview {
	position: relative;
	@include breakpoint-deprecated( ">960px" ) {
		position: static;
	}
}

@include breakpoint-deprecated( ">960px" ) {
	.design__playground {
		display: flex;
		height: calc(100vh - 47px);
	}

	.design__editor,
	.design__preview {
		width: 50%;
		overflow: scroll;
	}
}

.design__component-playground-code {
	max-height: 100px;
	overflow: hidden;
	position: relative;

	&.show-code {
		max-height: none;
	}
}

.design__component-playground-clipboard {
	padding: 0;
	position: absolute;
	right: 10px;
	top: 10px;
}

.design__component-playground-show-code {
	margin-top: 1em;
	text-align: center;
}

.design__playground-examples {
	margin-bottom: 1em;
	text-align: right;

	.select-dropdown__container {
		text-align: left;
	}
}