p5.js-web-editor/client/styles/abstracts/_placeholders.scss

%toolbar-button {
	@include themify() {
		display: inline-block;
		height: #{44 / $base-font-size}rem;
		width: #{44 / $base-font-size}rem;
		text-align: center;
		border-radius: 100%;
		line-height: #{46 / $base-font-size}rem;
		cursor: pointer;
		border: none;
		outline: none;
		background-color: getThemifyVariable('toolbar-button-background-color');
		color: getThemifyVariable('toolbar-button-color');
		& g {
			fill: getThemifyVariable('toolbar-button-color');
		}
		&:hover {
			background-color: getThemifyVariable('button-background-hover-color');
			color: getThemifyVariable('button-hover-color');

			& g {
				fill: getThemifyVariable('button-hover-color');
			}
		}
		&--selected {
	    background-color: getThemifyVariable('button-background-hover-color');
	    & g {
	        fill: getThemifyVariable('button-hover-color');
	    }
	  }
	}
}

%icon {
	@include themify() {
		color: getThemifyVariable('icon-color');
		& g {
			fill: getThemifyVariable('icon-color');
		}
		&:hover {
			color: getThemifyVariable('icon-hover-color');
			& g {
				opacity: 1;
				fill: getThemifyVariable('icon-hover-color');
			}
		}
	}
	background-color: transparent;
	border: none;
	cursor: pointer;
	padding: 0;
}

%button {
	@include themify() {
		background-color: getThemifyVariable('button-background-color');
		color: getThemifyVariable('button-color');
		cursor: pointer;
		border: 1px solid getThemifyVariable('button-border-color');
		border-radius: 2px;
		padding: #{10 / $base-font-size}rem #{30 / $base-font-size}rem;
		&:enabled:hover {
			border-color: getThemifyVariable('button-background-hover-color');
			background-color: getThemifyVariable('button-background-hover-color');
			color: getThemifyVariable('button-hover-color');
		}
		&:enabled:active {
			border-color: getThemifyVariable('button-background-active-color');
			background-color: getThemifyVariable('button-background-active-color');
			color: getThemifyVariable('button-active-color');
		}
	}
}

%preferences-button {
	@extend %toolbar-button;
	@include themify() {
		color: getThemifyVariable('primary-text-color');
		background-color: getThemifyVariable('modal-button-background-color');
		padding: 0;
		margin-bottom: #{28 / $base-font-size}rem;
		line-height: #{50 / $base-font-size}rem;
		& g {
			fill: getThemifyVariable('modal-button-color');
		}
		&:hover {
			background-color: getThemifyVariable('button-background-hover-color');
			color: getThemifyVariable('button-hover-color');
			& g {
				fill: getThemifyVariable('button-hover-color');
			}
		}
	}
}

%preference-option {
	@include themify() {
		background-color: transparent;
		color: getThemifyVariable('inactive-text-color');
		&:hover {
			color: getThemifyVariable('primary-text-color');
		}
	}
	font-size: #{12 / $base-font-size}rem;
	cursor: pointer;
	text-align: left;
	padding: 0;
	margin-bottom: #{5 / $base-font-size}rem;
	padding-right: #{5 / $base-font-size}rem;
	border: 0;
	list-style-type: none;
}

%modal {
	@include themify() {
		background-color: getThemifyVariable('modal-background-color');
		border: 1px solid getThemifyVariable('modal-border-color');
		box-shadow: 0 12px 12px getThemifyVariable('shadow-color');
	}
	border-radius: 2px;
	z-index: 20;
}

%hidden-element {
	position:absolute;
	left:-10000px;
	top:auto;
	width:1px;
	height:1px;
	overflow:hidden;
}