body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #f4f4f4;
}
.container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    width: 80%;
    background: white;
    padding: 20px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}
.box {
    flex-basis: 300px;
    background: lightblue;
    padding: 20px;
    text-align: center;
    font-size: 18px;
    font-weight: bold;
}