style.css

* {
    margin: 0px;
    padding: 0px;
    font-family: 'Times New Roman';
    box-sizing: border-box;
}

.nav {
    background-color: red;
    color: yellow;
    text-align: center;
    padding: 20px;
    font-size: 20px;
}

.main-box {
    border: 5px dotted black;
    height: fit-content;
    width: fit-content;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 50px;
    padding: 20px;
    margin: auto;
    margin-top: 20px;
}

.box {
    border: 10px dashed blue;
    border-radius: 25px;
    background-color: red;
    height: 300px;
    width: 200px;
    cursor: pointer;
}

.box:hover {
    box-shadow: 0px 0px 20px 10px blue;
}

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

.score {
    height: auto;
    width: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
}

#user, #computer {
    height: auto;
    width: auto;
    text-align: center;
    font-size: 20px;
}

#result {
    border: 2px dashed black;
    border-radius: 50px;
    padding: 20px;
    text-align: center;
    font-size: 30px;
    font-weight: bold;
    margin-top: 20px;
}