need a class which will allow plain and bold text mix

Do you want assigned a class to an element and you want elements with that class to be sometimes bold and sometimes not? Is that what you require? I understand what you are looking for and this can be achieved. Please contact me via chat and I will start right away. Thanks

we need to add class to welcome and website name and set its property as bold, so that wherever you use this class, the text is bold, it can be done using css

It depends what you want to achieve. If I understand it correctly, you want a PHP or Javascript class that makes partial parts of the text bold. If that's what you want, I can help you with cheap, quick work. I'm open to feedback, so I can edit if it doesn't satisfy you. If you are okay with those, I have several questions: What is the data you gonna use to make the text bold? Where the data will come from? For example, you might want to use asterisks (*) to make it look bold in the text, so that way you only need to supply the text. Or, you might want to select words by their index numbers or directly by their names. So, it would be better to know what you really need and want. Thanks in advance.

I have a lot of experience in competitive programming. What my idea is to find the number of words and make divide them into three sets. If it doesn't divide the extra will be kept in the middle part. The first and last should be converted to bold and the middle one will be left the same. I can do it within 2-3 hrs since it is just to add the <b> tags at the front and the end. The thing I want to know is how the input will be given and what language do you want this to be done in?