* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: Helvetica, Arial, sans-serif;
    font-size: 16px; /* Body font size */
    line-height: 2.0; /* Line spacing for readability */
    color: #ffffff; /* White text */
    background-color: #000000; /* Black background */
    margin: 20px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 15px;
    padding-right: 15px;
}

header {
    text-align: left;
    margin-bottom: 20px;
}

h1 {
    font-size: 24px; /* Heading font size */
    color: #ffffff; /* White heading text */
}

main p {
    margin-bottom: 15px;
}