section b {
	position: relative;
	display: inline-block;
	margin: 0 0.15em;
}
section b:empty {
	display: none;
}
section b::after {
	content: "";
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	display: block;
	width: calc(100% + 0.2em);
	height: calc(100% + 0.2em);
	background-color: rgb(255, 0, 0, 0.2);
	border: 1px solid #ff0000;
	border-radius: 5px;
}
section .flex-container {
	display: flex;
	column-gap: 2rem;
}
section .flex-container .input-wrapper.textarea {
	width: calc(50% - 1rem);
}
section .flex-container .output-wrapper {
	width: calc(50% - 1rem);
	margin-top: 0;
}