/* The page occupies 100% of the screen */
html {
    height: 100%;
    width: 100%;
}

/* The content occupies the entire space available */
body {
    height: 100%;
    margin: 0;
    background-color: #455A64;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

/* Transform the page into a 2-column grid */
#holder {
    display: grid;
    grid-auto-rows: 15% 85%;
    width: 100%;
    height: 100%;
}

/* The left grid contains the text and occupies 50% of the available space */
#text {
    align-self: center;
    justify-self: center;
    text-align: center;
    margin: 0px 15px;
    font-size: 0.5em; /*or vm in case*/
}

/* The right grid contains the model and occupies 50% of the available space */
model-viewer {
    width: 100%;
    height: 100%;
    outline: none;
}