body {
    font-family: Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
}

.color-picker {
    text-align: center;
    margin-bottom: 20px;
}

.color-block {
    margin: 20px 0;
}

.color-visualization-wrapper {
    display: flex;
    justify-content: space-around;
    margin: 10px 0;
}

.color-visualization {
    width: 100px;
    height: 100px;
    border: 1px solid #333;
}