I would like to replace the following lines in an Epub of mine:
<p class="timebreak"> <br class="calibre1" /></p>
<p class="timebreak">
with just (for example):
<p class="left">
I'm not having much success so far and I suppose the blank line in the text to be replaced is the cause of it. From a cursory search I gather something called 'marked text' may help me in Sigil but I do not understand how to use it (assuming I didn't completely misunderstood the advice of another thread which, sadly, is quite probable).
Guidance much appreciated.