@evidentpoint/readium-css/docs/ua-reference/ua-stylesheets/blink-chromium/circa-2015/fullscreen.css

A set of reference stylesheets for EPUB Reading Systems

:-webkit-full-screen {
    background-color: white;
    z-index: 2147483647 !important;
}
:root:-webkit-full-screen-ancestor {
    overflow: hidden !important;
}
:-webkit-full-screen-ancestor:not(iframe) {
    z-index: auto !important;
    position: static !important;
    opacity: 1 !important;
    transform: none !important;
    -webkit-mask: none !important;
    clip: none !important;
    -webkit-filter: none !important;
    transition: none !important;
    -webkit-box-reflect: none !important;
    -webkit-perspective: none !important;
    -webkit-transform-style: flat !important;
}
video:-webkit-full-screen, audio:-webkit-full-screen {
    background-color: transparent !important;
    position: relative !important;
    left: 0 !important;
    top: 0 ! important;
    margin: 0 !important;
    min-width: 0 !important;
    max-width: none !important;
    min-height: 0 !important;
    max-height: none !important;
    width: 100% !important;
    height: 100% !important;
    flex: 1 !important;
    display: block !important;
    transform: none !important;
}
img:-webkit-full-screen {
    width: auto;
    height: 100%;
    max-width: 100%;
}
iframe:-webkit-full-screen {
    margin: 0 !important;
    padding: 0 !important;
    border: 0 !important;
    position: fixed !important;
    min-width: 0 !important;
    max-width: none !important;
    min-height: 0 !important;
    max-height: none !important;
    width: 100% !important;
    height: 100% !important;
    left: 0 !important;
    top: 0 !important;
}