Add a container (div element) to body
add_container(my_html, id, align, into = "<body>")
| my_html | html in a vector of strings; output from 'create_html'. |
|---|---|
| id | character string; id name (optional) |
| align | character string; 'left', 'center', 'right'. (optional) |
| into | character string; unique identifier of a line in the html. Element id is highly recommended. |