example.css

* { box-sizing: border-box; }
html,
body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
}
body {
    background-color: #EEE;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center center;
    color: #444;
    font-family: 'Lato', sans-serif;
    line-height: 2;
    padding: 2em;
}
a { color: #3498db; text-decoration: none; }
a:hover { color: #2980b9; }
form {
    background: rgba(255, 255, 255, 0.9);
    padding: 30px;
    width: 330px;
    border-radius: 4px;
}
    fieldset {
        border: 0;
        margin: 0;
        padding: 0;
        font-size: 1em;
    }
    label {
        display: block;
    }
    input,
    button {
        max-width: 260px;
        font-size: 1em;
        padding: .5em;
        border-radius: 3px;
        border: 1px solid #3498db;
    }
    button {
        border: 0;
        background: #3498db;
        color: #FFF;
    }
.loading {
    background: #C5E2ED;
}
.examples li {
    list-style: none;
    display: inline;
    padding: 0;
    margin: 0 1ex 0 0;
}
.examples li:first-child {
    display: block;
}
.examples,
p {
    padding: 0;
    margin: 1em 0 0 0;
    font-size: .8em;
}