style.css

.container{
	background-image: url("2.jpg");
	background-repeat: no-repeat;
	background-size: cover;
	width: 100%;
	height: 100vh; 
	box-sizing: border-box;
	
}
body{
	padding: 0%;
	margin: 0%;
}
.middle{
	border: 2px solid mediumslateblue;
	display: flex;
	text-align: center;
	justify-content: space-between;
	flex-direction: column;
	width: 25%;
	margin-left: 22rem;
	margin-top: 5%;
	background-color: mediumslateblue;
	/* padding-left: 50px; */
}

td {
	border:  2px solid #333;
	height:  100px;
	width:  100px;
	text-align:  center;
	vertical-align:  middle;
	font-family:  "Comic Sans MS", cursive, sans-serif;
	font-size:  70px;
	cursor: pointer;
}

table {
	border-collapse: collapse;
}

table tr:first-child td {
	border-top: 0;
}

table tr:last-child td {
	border-bottom: 0;
}

table tr td:first-child {
	border-left: 0;
}

table tr td:last-child {
	border-right: 0;
}

.endgame {
    display: none;
    width: 200px;
    top: 17rem;
    background-color: rgba(205,133,63, 0.8);
    position: absolute;
    left: 50%;
    margin-left: -110px;
    padding-top: 46px;
    padding-bottom: 50px;
    text-align: center;
    border-radius: 5px;
    color: white;
    font-size: 2em;
}

.uper{
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: space-between;
	text-align: center;
	margin-right: 20rem;
	/* padding-top: 20px; */
	
}
h1{
	text-align: center;
	color:white;
	font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
	/* font-weight: 500; */
	font-size: 40px;
	font-weight: bolder;
}
button{
	font-size: 40px;
	font-weight: bold;
	width: auto;
	background-color: transparent;
	border: 1px solid black;
	color: white;
	text-align: center;
	
}
button:hover{
	background-color:white;
	border: white;
	color: rgb(76, 226, 151);
	cursor: pointer;
}