Dynamic Text for a Html Website to customize for client? Php/html? : <p>I am in following situation:</p>

<p>I am Programming a Website for a small local mobile repair shop. So far so good. Problem is, the Client wants to change the text every week because of new Offers. He does not know any coding, but he can use the computer as far as Word or a text document.</p>

<p>My Question: Is it possible to use external Sources of text for this? For example a offer.txt which I include in the page via php?</p>

<p>The question is, If the Text format will be the same for example fonts or stiley applied to it, or will I encounter any problems doing so?</p>
