style.css

. {
    margin: 0;
    padding: 0;
    font-family: 'Patua One';   
}
body{
    background-color: #224532;
}
h1{
    text-align: center;
    color: #ffffff;
}
td{
    border: 2px solid #ffffff;
    height: 70px;
    width: 70px;
    text-align: center;
    vertical-align: middle;
    cursor: pointer;
    font-family: "lobster";
}
table{
    border-collapse: collapse;
    border-spacing: 0;
    margin: 10px auto;
    background-color: #cccd55;
}
table tr td{
    width: 100px;
    height: 100px;
    border: 2px solid black;
    font-size: 30px;
    text-align: center;
}
table tr td:hover{
    background-color: salmon;
    cursor: pointer;
}
table tr:first-child td{
    border-top: 0px;
}
table tr:last-child td{
    border-bottom: 0px;
}
table tr td:first-child{
    border-left: 0px;
}
table tr td:last-child{
    border-right: 0px;
}
.winner {
    width:240px;
    height: 140px;
    margin: 20px auto;
    font-size: 60px;
    text-align: center;
    background-color: #00aa00;
}
.winner span  {
    font-size: 40px;
    display: block;
}
button{
    width: 240px;
    height: 100px;
    margin: 10px auto;
    display: block;
    border: none;
    background-color: #ef76;
    font-size: 45px;
}