html
{
    margin: 0;
    padding: 0;
    width: 100vw;
    height: 100vh;
}

body
{
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

#web_view
{
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
}