* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
}

body {
    background-color: #faf8ef;
}

.container {
    width: 500px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

h1 {
    font-size: 80px;
    color: #776e65;
}

.score-container {
    background-color: #bbada0;
    color: white;
    padding: 10px 20px;
    border-radius: 5px;
    font-weight: bold;
}

.grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-gap: 15px;
    background-color: #bbada0;
    padding: 15px;
    border-radius: 5px;
}

.box {
    width: 100px;
    height: 100px;
    background-color: #cdc1b4;
    border-radius: 5px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 40px;
    font-weight: bold;
    color: #776e65;
}


.box-2 { background-color: #eee4da; }
.box-4 { background-color: #ede0c8; }
.box-8 { background-color: #f2b179; color: white; }
.box-16 { background-color: #f59563; color: white; }
.box-32 { background-color: #f67c5f; color: white; }
.box-64 { background-color: #f65e3b; color: white; }
.box-128 { background-color: #edcf72; color: white; }
.box-256 { background-color: #edcc61; color: white; }
.box-512 { background-color: #edc850; color: white; }
.box-1024 { background-color: #edc53f; color: white; }
.box-2048 { background-color: #edc22e; color: white; }

.cover-screen {
    position: absolute;
    width: 100%;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

#start-button {
    background-color: #8f7a66;
    color: white;
    border: none;
    padding: 15px 25px;
    font-size: 20px;
    border-radius: 5px;
    cursor: pointer;
    margin-top: 20px;
}

.hide {
    display: none;
}