Facebook Like button displayed incompletely

Incompatibilities between Joomla! components and custom templates are a common issue. On some responsive templates, the Facebook Like button and its iframe will be displayed incompletely, because of inappropriate Bootstrap CSS definitions. This can, however, be corrected by editing the component's CSS file:

components\com_rseventspro\assets\css\style.css

and adding the following definitions anywhere within it:

iframe, svg {
    max-width: none !important;
    }