/* Page background and font */
body {
    background-color: yellow;
    font-family: Arial, sans-serif;
    text-align: center;
    margin: 0;
    padding: 20px;
}

/* Background blocks */
.green-bg {
    background-color: green;
    padding: 10px;
    margin: 10px auto;
    width: 80%;
    box-sizing: border-box;
}

.white-bg {
    background-color: white;
    padding: 10px;
    margin: 10px auto;
    width: 80%;
    box-sizing: border-box;
}

/* Text colors */
.red-text { color: red; }
.blue-text { color: blue; }
.brown-text { color: brown; }
.green-text { color: green; }