app.css

/* toggle class */

.winner {
    color: green;
}

.loser {
    color: red;
}

/* Main styling */

body {
    align-items: center;
    height: 100vh;
}

.main {
    display: flex;
    width: 50%;
    height: 400px;
    margin: auto auto;
    margin-top: 20px;
    flex-direction: column;
    border: solid 5px black;
    border-radius: 10%;
}

.score {
    text-align: center;
    font-size: 64px;
}

.instruction {
    text-align: center;
    font-size: 2em;
    font-family: Arial, Helvetica, sans-serif;
    border-bottom: solid 5px black;
}

.button-section {
    display: flex;
    justify-content: flex-start;
    margin-top: 20px;
}

.button {
    width: calc(100%/3);
    height: 100%;
    font-size: 1.2em;
    border: none;
}

.button.p1 {
    background-color: red;
}

.button.p1:hover {
    box-shadow: 0 0.5em 0.5em -0.4em red;
    transform: translateY(-0.1em); 
}

.button.p2 {
    background-color: #2cd82c;
}

.button.p2:hover {
    box-shadow: 0 0.5em 0.5em -0.4em #2cd82c;
    transform: translateY(-0.1em); 
}

.button.reset {
    background-color: #b2a5a5;
}

.button.reset:hover {
    box-shadow: 0 0.5em 0.5em -0.4em #b2a5a5;
    transform: translateY(-0.1em); 
}

.maxscore {
    text-align: center;
}

.maxscore label {
    font-size: 1.5em;
    font-weight: bold;
}

#maxscore-select {
    width: 10%;
    height: 30px;
    background-color: #a9f1d9;
    font-size: 0.7em;
}

@media(max-width: 600px) {
    .main {
        width: 90%;
    }
    .button-section {
        margin-top: 10px;
    }
}