* {
    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Roboto,
        Helvetica,
        Arial,
        "Apple Color Emoji",
        "Segoe UI Emoji",
        "Segoe UI Symbol",
        sans-serif;
}

#outer-container {
    min-width: 300px;
    max-width: 800px;
    margin: 0 auto;
}

#buttons {
    font-size: 0;
    padding: 0 10px;
}

#buttons button {
    font-size: 1rem;
    background: #efefef;
    border: 1px solid silver;
    margin-right: -1px;
    padding: 0.5rem 1.5rem;
    margin-bottom: 0.5rem;
}

#buttons button:first-child {
    border-top-left-radius: 0.3em;
    border-bottom-left-radius: 0.3em;
}

#buttons button:last-child {
    border-top-right-radius: 0.3em;
    border-bottom-right-radius: 0.3em;
}

#buttons button:focus {
    outline: none;
    background: #dfdfdf;
}
