rdio-scanner/docs/examples/iframe/index.css

html {
    min-height: 100%;
}

body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
}

body,
.outer-container {
    min-height: inherit;
}

.outer-container {
    background-color: #1e1e1e;
    color: #fafafa;
}

.outer-container,
.inner-container {
    align-items: center;
    display: flex;
    flex-direction: row;
    height: inherit;
    justify-content: center;
}

.inner-container {
    flex-wrap: wrap;
}

.inner-container>div {
    box-sizing: border-box;
    max-width: 720px;
    min-height: calc(608px + 1rem);
    min-width: 410px;
    padding: 1rem;
}

.inner-container iframe {
    border: none;
}