html, iframe {
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
    font-size: 16px;
    vertical-align: baseline;
    background: transparent;
    width: 100%;
    height: 100%;
    overflow-x: hidden;
    overflow-y: scroll;
    -webkit-overflow-scrolling: touch;
    font-family: 'Roboto', sans-serif;
    color: #FFFFFF;
}

div {
    border: 2px;
}