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;
    position: absolute;
    left: 50%;
    margin-left: -155px;
    top: 50px;
}
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{
    width: 200px;
    position: relative;
    top: 350px;
    left: 50%;
    margin-left: -100px;
    padding-top: 50px;
    padding-bottom: 50px;
    text-align: center;
    border-radius: 5px;
    color: black;
    font-size: 2em;
}
button{
    padding: 10px;
    border: 0;
    background-color: lightseagreen;
    border-radius: 2%;
}
button:hover{
    border: 2px solid black;
    border-radius: 5%;
}