body{
    background:#f5f5f5;
    margin:0;
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
    color:#222;
}

.container{
    max-width:900px;
    margin:0 auto;
    padding:15px;
}

a{
    color:#1976d2;
    text-decoration:none;
}

a:hover{
    text-decoration:underline;
}

hr{
    border:none;
    border-top:1px solid #ddd;
    margin:20px 0;
}

h2{
    margin-top:0;
}