Siksha Sarovar

Siksha Sarovar (sikshasarovar.com) is a free educational web application that helps students in India learn programming and prepare for academic and competitive exams. The platform offers structured coding courses (C, C++, Python, Java, HTML, CSS, PHP, Power BI, AI, Machine Learning, Data Science), complete university curriculum notes for BCA/MCA students with previous year question papers, Class 10 and Class 12 CBSE/HBSE school notes, and dedicated preparation material for SSC, UPSC, Banking, Railway and other government exams. Browsing the site is completely free and requires no account. Users may optionally sign in with Google solely to save their learning progress, quiz scores and personal preferences across devices.

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Siksha Sarovar is a free e-learning platform for coding courses, BCA university notes and competitive exam preparation. Optional Google sign-in saves your learning progress across devices.

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4. CSS - Measurement Units

Lesson 4 of 34 in the free CSS Customization: Zero to Hero notes on Siksha Sarovar, written by Rohit Jangra.

CSS Measurement Units

CSS supports a number of measurements including absolute units such as inches, centimeters, points, and so on, as well as relative measures such as percentages and em units.

Relative Units

UnitDescriptionExample
%Percentage relative to another value (typically parent).font-size: 150%;
emRelative to the font-size of the element (2em means 2 times the size of the current font).letter-spacing: 7em;
remRelative to fontsize of the root element.font-size: 1.5rem;
vwRelative to 1% of the width of the viewport.width: 50vw;
vhRelative to 1% of the height of the viewport.height: 100vh;

Absolute Units

UnitDescriptionExample
cmCentimetersmargin-bottom: 2cm;
mmMillimetersword-spacing: 15mm;
inInchesword-spacing: .15in;
pxPixels (1px = 1/96th of 1in).padding: 25px;
ptPoints (1pt = 1/72 of 1in).font-size: 18pt;
pcPicas (1pc = 12 pt).font-size: 20pc;