There are in total of three rounds, excluding the HR round which is basically nothing.
1st round- They will get you to do 20 aptitude questions and then give you a question paper where you have to write subjective answers. The questions are from HTML and CSS, there latest version.
2 nd round- They will call you another day for this. The time slot they give, is not going to be correct cause they take the interview after 3-4 hours. They make you wait just like that. They will ask questions from HTML and CSS.
3 rd round- They will again make you wait for 3-4 hours and call you on a different day. They will again ask question from HTML and CSS. Then they will ask you to write codes in a language you know.
When you qualify all these rounds, the HR will quote you the salary of a maid or servant working in your house for the next one year. So forget it, no point in wasting three days waiting for something like this.