* {
	box-sizing: border-box;
}

.main {
	text-align: center;
}



h1{
	font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
	font-size: 30px;
    padding: 7px;
    margin: 0;
    text-align: center;
}

.table {
	margin-left: auto;
	margin-right: auto;
}

tr:first-child td {
	border-top-color: black;
}

tr:nth-child(3n) td {
	border-bottom-color: black;
}

td {
	border: 1px solid lightgrey;
	height: 40px;
	width: 40px;
}

td:first-child {
	border-left-color: black;
}

td:nth-child(3n) {
	border-right-color: black;
}



.input {
	padding: 0;
	text-align: center;
	border: 0;
	height: 40px;
	width: 40px;
	text-align: center;
	font-weight: bold;
}

.input:hover {
	background: #ffffff;
}

.input-solved {
	/* font-weight: normal; */
	color: red;
}

.reset {
	background-color: rgba(88, 191, 235, 0.805);
	border: none;
	color: white;
	padding: 15px 32px;
	text-align: center;
	text-decoration: none;
	display: inline-block;
	font-size: 16px;
	margin: 4px 10px;
	cursor: pointer;
}

.solve {
	background-color: #4CAF50;
	border: none;
	color: white;
	padding: 15px 32px;
	text-align: center;
	text-decoration: none;
	display: inline-block;
	font-size: 16px;
	margin: 4px 10px;
	cursor: pointer;
}