body, html {
    margin: 0;
    padding: 0;
    height: 100%;
    width: 100%;
    overflow: hidden; /* This prevents any potential scrollbars on the body */
}

#responsive-iframe {
    border: none; /* Removes border */
    width: 100%;  /* Takes full width */
    height: 100%; /* Takes full height */
}

body {
    -webkit-touch-callout: none; /* iOS Safari */
    -webkit-user-select: none; /* Safari */
    -khtml-user-select: none; /* Konqueror HTML */
    -moz-user-select: none; /* Old versions of Firefox */
    -ms-user-select: none; /* Internet Explorer/Edge */
    user-select: none; /* Non-prefixed version, currently supported by Chrome, Edge, Opera and Firefox */
}