hapi-demo/public/style/views/test.css

html,body{
    height: 100%;
}

body{
    display: flex;
    flex-direction: column;
}

.section{
    height: 0;
    flex-grow: 1;
}

.container{
    height: 100%;
}

#root{
    height: 100%;
}

.bytemd {
    height: 100%;
    z-index: 99;
}