body {
    background-color: #fff;
}
h2 {
    margin-top: 20px;
    margin-bottom: 20px;
}
.header {
    margin-top: 20px;
    margin-bottom: 50px;
}
h2, h4, a {
    color: #333;
}
.container {
    margin-bottom: 50px;
}