* {
     box-sizing: border-box;
     padding: 0px;
     margin: 0px;
}

html {
    width: 100%;
    height: 100%;
}

body {
    width: 100%;
    height: 100%;
    background-color: #e735a6;

}

.tb-area {
    width: 50%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    margin: auto;
}

.info {
    width: 100%;
}

.info-ls {
    width: 100%;
    float: right;
    list-style: none;
    display: flex;
    justify-content: space-around;
    margin-top: 30px;
    margin-bottom: 30px;
    flex-wrap: wrap;
    color: #fff;
}

.info-ls li {
    margin: 10px;
}

.reset-btn button {
    width: 50px;
    font-family: Arial, Helvetica, sans-serif;
    background-color: #fff;
}

.reset-btn button:hover {
    border: 3px solid #000;
}

.gboard {
    width: 100%;
    min-width: 350px;
    height: 400px;
}

.gboard td {
    width: 100px;
    height: 100px;
    margin: 0px;
    padding: 0px;
    font-size: 50px;
    font-weight: bold;
    text-align: center;
}

.r1 .c1,
.r1 .c2 {
    border-right: 2px solid #fff;
    border-bottom: 2px solid #fff;
}

.r2 .c1,
.r2 .c2  {
    border-right: 2px solid #fff;
    border-bottom: 2px solid #fff;
}

.r1 .c3,
.r2 .c3 {
    border-bottom: 2px solid #fff;
}

.r3 .c1,
.r3 .c2 {
    border-right: 2px solid #fff;
}


@media (max-width: 450px){
    .info {
        font-size: 12px;
        width: 100%;
    }

    .info-ls{
        width: 100%;
        display: block;
    }

    .info-ls li {
        margin: 15px;
    }

    
    .gboard td {
        width: 70px;
        height: 70px;
    }

    .gboard {
        min-width: 280px;
        height: 320px;
    }
}



@media (max-width: 360px){
    
    .gboard td {
        width: 60px;
        height: 60px;
    }

    .gboard {
        min-width: 280px;
        height: 280px;
    }
}