game.css

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

.hide {
    visibility: hidden;
}

body {
    width: auto;
    height: 100vh;
}

header {
    text-align: center;
    width: 100%;
    height: 10%;
    font-size: 3em;
    font-weight: 900;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    background: #cf60e7;
    color: white;
}

.top {
    height: 30%;
    width: 100%;
    justify-content: center;
    align-items: center;
    padding: 10px;
    text-align: center;
    background: #570f69;
}

.p1,
.p2 {
    border-radius: 15px;
    height: 40px;
    width: 30vw;
    font-size: 1.5em;
    text-align: center;
}

label {
    color: white;
}

/* bottom section */

.bottom {
    height: 60%;
    width: auto;
    background: #47e4e4;
    text-align: center;
}

.field {
    justify-content: center;
    align-items: center;
    display: flex;
    flex-direction: column;
    padding: 20px;
}

.row {
    display: flex;
}

.cell {
    height: 55px;
    width: 55px;
    border-radius: 5px;
    background: coral;
    margin: 2px;
    transition: 5ms;
    -moz-box-shadow: inset 0 0 10px #000000;
    -webkit-box-shadow: inset 0 0 10px #000000;
    box-shadow: inset 0 0 10px #000000;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-weight: 800;
}

.cell:hover {
    background: green;
    cursor: pointer;
    transform: scale(1.1);
}

.info {
    color: blue;
    font-size: 1.2em;
}

.play_again,
.reset,
.Start {
    height: 30px;
    width: 20vh;
    border-radius: 10px;
    margin: 2px;
    background: greenyellow;
    color: grey;
    font-weight: 500;
    font-size: 1.2em;
}

.tap:focus,
.play_again:focus,
.reset:focus,
.Start:focus,
.p1:focus,
.p2:focus {
    outline: none;
}

@media screen and (max-width: 628px) {
    body {
        width: auto;
        height: 110vh;
    }
}