CSS calc () is a property expression which allows you to perform minor calculations on the stylesheets itself. The expression allows us to calculate the result of the subtraction between two different CSS length values right on the stylesheets without using JavaScript, even if the lengths don’t share the same units.

Using CSS calc (), we can perform basic arithmetic operations like addition, subtraction, multiplication and division. The function works on many types of numerical CSS values like time, length, angle, frequency, integers and numbers.

Since when HTML was launched, it has been receiving a great response from designers and developers across the globe. We have been using HTML from quite some time now, but the question is how efficiently it works while designing a website. The markup languages should work as per the requirements but with the existing markups, the developers are struggling to integrate the responsive features that make the website speedy and semantic.

Today, hackers are everywhere and they have been looking for the sites with easy to guess passwords for the admin account or those who have failed to apply the patch. Most of you might have come across the situation where your email account is blocked or the Facebook password not working. This is because your passwords might have been hacked. Earlier hackers used to try the brute force password guessing method as the first attack on the content management systems. Then they used to exploit the benefits of just-published vulnerabilities.