body {
    background-color: #212121;
    color: #fff;
    display: flex;
    align-items: center;
    height: 100vh;
    margin: 0;
    font-family: 'Arial', sans-serif;
    flex-direction: column;
}

* {
    box-sizing: border-box;
}

input, select, textarea { 
    -webkit-appearance: none; 
    -webkit-border-radius: 0; 
    border-radius: 0; 
}


#tetris-container {
    display: grid;
    grid-template-columns: repeat(10, 30px);
    border: 2px solid #3498db;
    padding: 1px;
    border-radius: 2px;
}

input[type="checkbox"] {
    width: 30px;
    height: 30px;
    margin: 0;
    border: 1px solid transparent;
}

input[type="checkbox"]:checked {
    background-color: #3498db;
    border-color: #212121;
}

button {
    background-color: #3498db;
    color: #fff;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    margin-top: 10px;
    cursor: pointer;
}

#score {
    margin-top: 20px;
    font-size: 18px;
}

#high-score {
    margin-top: 20px;
}

#high-score-list {
    list-style-type: none;
    padding: 0;
}

#high-score-list li {
    margin-bottom: 5px;
}

.status {
    display: block;
    background: yellow;
    color: black;
    font-weight: bold;
    width: 100%;
    text-align: center;
    padding: 1rem;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.status a {
    color: black;
}