body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

*, *::before, *::after {
    box-sizing: inherit; 
}

.main {
    max-width: 1200px;
    margin: 10px auto;
    /* padding: 20px; */
    border-radius: 12px;
}

h1 {
    color: #2c3e50;
    margin-bottom: 0;
    font-size: 2em;
}

.sub-heading {
    margin-top: 0;
}