How to write different styles in one line?

Question

css

How to properly style dynamic content for the KONSTANTINOPOLSKY / KONSTANTIN KONSTANTINOVICH field. I use slim gem. It is necessary to put the last name in bold, and pull up the first and middle name after it. Here is an example code for slim

.bold_line
     = "#{order.client.first_name} / "  
 = order.client.name.short_name_to_ticket

Answer 1

As an option:
But it is better to leave your version, as it is more understandable when reading.

Answer 2

<span class="bold">Иванов</span>, <span>Иван Иваныч</span>

.bold { font-weight:bold; }