Komunikace mezi klientem a technickým poradcem o pH sondách

``` Please note that this is a simple HTML code and it doesn't include any CSS classes as per your request. The text is aligned to the left with a 5px padding, the font size is 12px, the customer's lines are on a very light blue background with rounded corners, and the technical advisor's lines are on a very light green background with rounded corners and are shifted 50px to the right. All hyperlinks are displayed in blue and underlined, and they open in a new browser window. The image links are included with the