body {
    background-color: #F2F2F2 !important;
}

#container {
    border: 1px solid #ccc;
    background-color: #fff;
    margin: 20px;
    padding: 15px;
}

h1 {
    font-size: 24px;
}

h2 {
    font-weight: 600;
}

h3 {
    font-weight: 550;
}