body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background: linear-gradient(270deg, #ffcccc, #ccffcc, #ccccff, #ffffcc, #ffccff, #ccffff);
    background-size: 1200% 1200%;
    animation: gradientAnimation 10s ease infinite;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    text-align: center;
} 

.puzzle {
    display: grid;
    grid-template-columns: repeat(3, 100px);
    grid-gap: 5px;
    margin-bottom: 20px;
}

.piece {
    width: 100px;
    height: 100px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    font-weight: bold;
    background-color: #e0e0e0;
    border: 1px solid #ccc;
    cursor: pointer;
    user-select: none;
}

.piece.empty {
    background-color: transparent;
    border: none;
    cursor: default;
}
.xx{
    background-color: crimson;
    margin: 25px;
    padding: 25px;
    text-align: center ;
}