.first-column {
	display: flex;
	flex: 3;
	align-items: center;
	justify-content: center;
}

.second-column {
	display: flex;
	flex: 6;
	flex-direction: column;
	justify-content: center;
	align-items: center;
}

.third-column {
	flex: 4;
	display: flex;
	flex-direction: column;
	align-items: flex-end;
}

button {
	width: fit-content;
	margin: auto;
	background-color: rgb(50, 50, 50);
	color: gold;
	padding: 5px 10px;
	border-radius: 8px;
}

button:focus {
	outline: none;
}

button:hover {
	cursor: pointer;
}

/* Style the width input reader container */

#widthInputContainer {
	display: inline-flex;
	flex-direction: column;
	border: 1px solid;
	border-radius: 10px;
	padding: 20px;
	background-color: gray;
}

/* Style instructions (set visible on hover) */

#insHover {
	width: fit-content;
	font-size: 14px;
	border: 1px solid;
	border-radius: 10px;
	padding: 10px;
	background-color: rgb(50, 50, 50);
	margin: 20px 0;
}

#instructionsContainer {
	display: none;
	border: 1px solid;
	border-radius: 10px;
	padding: 20px 40px 40px 40px;
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	z-index: 1;
	background-color: rgb(50, 50, 50);
}

#insHover:hover+#instructionsContainer {
	display: inline-block;
}

/* Style the input grids for each matrix operation */

#gridContainer {
	visibility: hidden;
	border: 1px solid black;
	border-top: none;
	border-bottom: none;
	display: grid;
	padding: 30px;
	grid-gap: 10px;
	border-radius: 30px;
	background-color: white;
}

/* Style second input prompt container */

#secondInputContainer {
	display: flex;
	flex-direction: column;
	border: 1px solid;
	border-radius: 10px;
	padding: 10px;
	visibility: hidden;
	background-color: gray;
	margin-bottom: 20px;
	width: 80%;
	text-align: center;
}

/* Style invalid input fields */

.invalid {
	border: 2px solid red;
}

/* Style output container */

#outputContainer {
	width: 90%;
	display: flex;
	flex-direction: column;
	align-items: center;
	border: 1px solid;
	border-radius: 10px;
	padding: 10px;
	visibility: hidden;
	font-size: 24px;
	background-color: gray;
}

#outputGrid {
	border: 1px solid;
	border-radius: 15px;
	border-top: none;
	border-bottom: none;
	display: grid;
	grid-gap: 10px;
	padding: 10px;
}

#outputGrid div {
	padding: 3px 0;
	font-size: 12px;
	text-align: center;
}