body {
    margin: 0;
    font-family: sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    background-color: #2c3e50; 
    min-height: 100vh;
    padding: 40px;
}

h1 {
    font-size: 5rem;
    color: #ffffff;
    text-align: center;
}

.container {
    display: flex;
    gap: 20px;
    width: 100%;
    max-width: 800px;
    margin-top: 40px;
}

.box {
    flex: 1;
    height: 200px;
    background-color:blue;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    border-radius: 10px;
}

@media (max-width: 500px) {
    body {
        background-color: green; 
    }

    h1 {
        font-size: 2rem;
    }

    .container {
        flex-direction: column;
    }
}