Someone answer this because I need to know as well
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Answer:
Algorithm for the above problem: 
- Take a string from the user input.
- store the input string on any variable.
- Reverse the string and store it on the other variable.
- Compare both strings (character by character) using any loop.
- If all the character of the string matched then print that the "Input string is a palindrome".
- Otherwise, print "The inputted string is not a palindrome." 
Output:
- If the user inputs "ababa", then it prints that the "Input string is palindrome"
- If the user inputs "ababaff", then it prints that the "Input string is not palindrome"
Explanation:
- The above-defined line is a set of an algorithm to check the number is palindrome or not.
- It is defined in English because the algorithm is a finite set of instructions written in any language used to solve the problem. 
- The above algorithm takes input from the user, compare that string with its reverse and print palindrome, if the match is found.
 
        
             
        
        
        
Answer:
Tags can be identified as they are written as <tagname> Something </tagname>
<tagname> this tag is called start tag.
</tagname> this tag is called as end tag.
for ex:<p> This is a paragraph </p>
There are some elements with no end tag.for ex:- <br> tag.
Attributes are used to provide additional information to an HTML element.
Every element can have attributes.
for Ex:- <h1 style="background-color:red";>MY WEBSITE </h1>
So the background of h1 will become red.