td {
    border: 2px solid black;
    height: 100px;
    width: 100px;
    font-size: 40px;
    cursor: pointer;
    text-align: center;
    vertical-align: middle;
}


table {
    border-collapse: collapse;
    position: absolute;
    margin-left: 35%;
    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 {
    display: none;
    width: 200px;
    height: 100px;
    top: 140px;
    background-color: rgba(255, 0, 0, 0.9);
    position: absolute;
    display: inline-block;
    left: 46.5%;
    margin-left: -100px;
    /* padding-top: 50px; */
    /* padding-bottom: 50px; */
    border-radius: 5px;
    font-size: 40px;
    text-align: center;
    vertical-align: middle;
    line-height: 90px;
    border: 5px;
    color: white;
}

.score {
    display: inline-block;
    margin-left: 39%;
    margin-top: 30%;
    text-align: center;
}

.scorecard {
    float: left;
    margin-left: 10px;
    margin-right: 10px;
    font-size: 15px;
    text-align: center;
}

.box {
    height: 50px;
    width: 50px;
    border: solid black 1px;

    font-size: 30px;
    justify-content: center;
    display: flex;
    align-items: center;
}


.btn {
    margin-top: 5%;
    margin-left: 42.5%;
    width: 110px;
    height: 35px;
    font-size: 15px;
    border-radius: 5px;
    cursor: pointer;
}

.btn:focus {
    outline: none;
}

@media (max-width: 600px) {

    table {
        margin-left: 7%;
    }

    .score {
        margin-top: 110%;
        margin-left: 20%
    }

    .btn {
        margin-top: 15%;
        margin-left: 36%
    }

    

}