html,
body {
    font-family: Roboto, sans-serif;
    margin: 0;
}
html {
    font-size: 15px;
}

h1,
h2,
h3 {
    font-family: 'Source Code Pro', sans-serif;
    margin-top: 0;
}
    h1 {
        font-size: 1.8rem;
    }
    h2 {
        font-size: 1.5rem;
    }
    h3 {
        font-size: 1.4rem;
    }


.alert {
    margin-top: 10px;
}
    .alert li {
        margin-bottom: 5px;
    }
    .alert em {
        font-weight: 500;
        font-style: normal;
    }

footer {
    padding: 10px 0;
    color: #aaa;
    font-size: 11px;
    font-style: italic;
    border-top: 1px solid #e6e6e6;
}

.container { margin:150px auto;}