A CSS Unit Deep Dive - Learn CSS Units & When To Use Them

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0:00 intro
1:09 Pixel unit
6:15 em & rem
12:10 %, vh, vw
14:12 ch unit
There’s at least 40+ different length units in the CSS specification and initially I was going to go over literally each one of them until I realized how silly of an idea that was. The truth is, many of these units should either not be used at all or are rarely used for web design.

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They're so many dev channels on KZbin. Your own is unique because it's straightforward, detailed, broken down, etc. I don't know how you do it but your explanation is clearer than the rest

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I would love to see you cover Flexbox vs Grid - When to use which one (separately and combined). As always great and clean video!

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Very nice explanations. Appreciate the time you take to structure the info! Keep them coming!

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7:55 'big disrespect, don't do this.' LMAO

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Thanks, no one can be shorter and more understandable

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I watched a looot of videos of basic concepts to undestand official docs, and your channel is by far the best explaining everything in a concise and practical way. Also love Berserk

[@fvgoya]

Your content is extremely well produced and detailed. You should have way more subscribers. Please don’t stop to create content.

[@iribaaa2643]

Hi, thank you so much. The second part of the video about using the common CSS units was so straightforward!!! You're examples and the way you explained was really great.

[@sergio_saad]

man. you`re just out of this world. Just cant believe the precise class I`m having. Congrats.

[@rhys7homas]

This is such a massive help! I like that you show real use cases where you would use which unit and the reason for it. I’ll definitely remember the 45ch-75ch rule of thumb. Keep these coming. Your production is top tier!

[@slayingthedragon]

Thank you, much love ❤️❤️

[@tamirhalperin2404]

Fantastic video. Explains everything so clearly and with such simplicity that anyone can finally understand such a ubiquitously confusing concept. Bravo!

[@juliusbusiness4283]

THANK YOU SO MUCH FOR THIS VIDEO, I never quite understood these types of units and stuck to the PX even though the people around me were using REM and EM.

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Dude, as someone who started webdeveloping 18 years ago (and been at it on and off), this channel is a treasure. Not following the space for longer periods of time had always made me feel like it's very hard to catch up with the latest developments. But it's videos like these (and your clear and concise explanations) that makes coming back to web development a LOT less daunting. Thanks so much!

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Love your video tutorials - so concise and great examples. Well done - keep them up mate :)

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you have no idea on how much you have helped me through your videos, thank you so so so much

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Thanks for providing amazing clarity on the topic! 🙌✨ Eagerly waiting for future uploads ! 😊

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❤️❤️ Thank you ☺️

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I just started working as a front-dev recently and your css videos have taught me basics that I wouldn't have learned unless I were in school again :) Thanks and can't wait for your next videos~

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[@michaellawson9353]

Straight to the point as usual, big thanks for the CH units I looked for someting like that for so long

[@slayingthedragon]

Thank you - yea ch unit is pretty pretty good ☺️❤️❤️

[@JaLikon65]

You my friend, are an absolute gift to the world of web development. Thank you for this explanation and your videos in general. You make truly fantastic videos; I can't thank you enough for all the effort you put into them!!

[@JaLikon65]

Also, thank you for covering the specific USECASES for all of these Units! There are some other videos out there that covers these units. Some of them are even as concise as your video. But, the key thing they lack is that they don't explain when you would actually use these units! Adding that in makes this video just so much more useful to me. And in general, I REALLY like how in your video you explain the concepts -- but the you also provide examples or guidance on how you can effectively use those concepts. That's the big thing that sets these apart I think. Along with the great voice quality, animations, examples, etc :) Just 10/10 work my friend, I really appreciate it. You have a real gift for this stuff

[@harshitjoshi3082]

This is the single best video i have seen about css units, definitely going to my favourites playlist

[@user-zj6iz1rl8d]

As always his videoes are gold to my stubborn ears, his words are a like a birds songs, truly this mans explantion is capable of bringing peace to this chaotic world.

[@juniorWeb247]

best and superb example of em unit really thank you soo much brother. god bless you

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Good video, I recently found out about your channel, and I'm really amazed of the quality and the content overall. Keep up the good work, you are my best web dev learning channel !

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Thank you so much for the support, much love ❤️❤️❤️☺️

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Great vid - love your work. Been subscribed for a week or two now, and eagerly await more!

[@slayingthedragon]

Thanks for the support ❤❤❤😊😊😊

[@satyamdograreallife]

Solid Support from you bro. I appreciate it. Now (rem & em) are clear.

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Your videos are the best online on CSS, so good!

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Thank you ❤️❤️❤️

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Much love ☺️❤️❤️❤️

[@Yesterday_i_ate_rat]

Every unit is crystal clear ❤❤ Thank you so much sir, this channel is 💎 gem ❤❤❤

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Your videos are effing awesome mate! Thank you.

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really good videos, these helped me a lot, Thanks, keep making such videos

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man. you are the best when its come to explaining. i'm still waiting for your coverage in javascript :). you are now one of my teacher in front end programming.

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Just stumbled upon your channel by good fortune. As others have said, superb and concise content. Subbed!

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Thank you ☺️❤️

[@shreyanshmalviya4571]

Truly amazing, I would also like to add vmin and vmax to the list as they help me keep constant relative size to text across different screen resolutions and scalings

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the accessibility part was awesome!

[@satyamdograreallife]

Yo !!!! That explanation is so fast for beginners like me. I'll have to watch it like 20 times to fulty interpret it. Anyway setting the height of my grid to 100vh did set the grid cover the enitre height & width of the page. Thanks again dude.

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Clear crisp explanation as always 🙌 ✨

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Watched too many videos, but this video cleared my all doubts Thanks😊

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It helped me a lot. Specially the bonus part. Thanks

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Man is the goat in explaining

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All of your video are great. Learned a lot from your videos.

[@slayingthedragon]

Thank you ☺️❤️

[@subyouwont]

I thought I was understanding units okay but then I watched this video and my understanding grew a lot. Only thing I would add is to use the font size browser slider at the end of your rem section with the button to show how the padding interacts with the font. We can infer it grows and shrinks but I’m a visual learner

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As the name suggests Sir, you have literally slayed the dragon. Thanks for your videos. Knowledge with precision!

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[@tobiasnorheim7382]

svh and dvh can be useful as well when dealing with tablet and phone screens, but should have vh as fallback

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[@HenzyProductions]

Nice video! I like to use rem: :root { font-size: 62.5% } Its more easy to use, because 1rem = 10px, 16px = 1.6rem.

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Thank you ☺️ - it's the Razer huntsman V2 tenkeyless with foaming pad and the silent linear keys

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Thanks for another great tutorial... Your explanation is great...

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Thanks 😊😊❤❤❤

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this is what I needed, not some 70 hours from zero to hero css course that doesn't cover css units

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amazing stuff

[@fartlander]

One key takeaway from this video is at 10:58 (kzbin.info/www/bejne/nKu9hamCotKHsK8) The use case for mixing em and rem is buttons. Font size in rem, padding in em. font-size: 1.5rem; padding: 1em; Why? When not used for font-size, em is the requested size relative to the font-size setting in the element. Another superb video. You really are a master of brevity and subject matter. That makes understanding sooo much easier.

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Good suggestion, thank you ❤

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Cheers for this.

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You are a genius. Thanks you.

[@_ndot]

Nice video. I did not know about the padding trick and the ch units. Thanks. ---------- Like you said the reference pixel is a reference for a standard that works for us, humans, visually. It's important to note that you can calculate the actual size on the screen, at least the majority of times. ---------- In your first example the screen is 1080p (1920x1080px) and is 27 inch (23.532 by 13.237 inches). Lets translates this to the superior unit of length and we get 59.771cm by 33.622 cm. Because you used a square we can pick either height or width lets pick height for this example: 33.622cm / 1080px = 0.03113148148148148cm/px -> this is the size of each pixel in cm 0.03113148148148148 x 96px = 2.98862cm -> this is the size of a square with 96px If you look at 2:10 you can see that the ruler is on the money 2.9cm. ---------- Cheers and keep it up really nice videos.

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You're amazing thank you

[@6.squash.936]

Keep creating such small videos about topics in no time your channel will be a go to channel for beginners. Also create content regarding Javascript and React once you are done with the CSS part . I learned Flex-box and Grid from your channel i was a complete doodoo but after I saw your videos it changed everything. Keep Growing 💗

[@slayingthedragon]

Thank you so much for this comment, much love ❤️❤️❤️

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You're making learning easier for me. Thanks a lot! Hope you get more subs and views. Also, I hope you're planning on making JS vids too.

[@slayingthedragon]

I'm happy to hear that! And yea totally, JS vids are in the works

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you are a great teacher.

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so easy to understand 👍👍❤️!

[@PopGoesTheWiz]

Thanks for this.

[@jonathantubo1310]

This is very helpful

[@novasideias531]

2:21 The screens are measured diagonally (i.e. 27'' diagonally, what changes sometimes is the aspect ratio), i.e. unless I'm not understanding what's going on, these examples are not proof, moreover the pixel size really changes, so computer screens and cell phone screens are usually more expensive than TV screens, for example, because the space is smaller and the manufacturing process, being more modern, is more expensive, to place the same amount of pixels in space dozens of times smaller

[@theepicgamer5808]

Great video. I forget the name of the book (it's got to be 15+ years old now) but it had an example that used the absolute size of "small" on the html element. The benefit being it still allowed the user to customize their font-size (as you demonstrated) but gave you a rem equivalent to 10px. It made the math easier for me for when, for example, someone asked for 32px font I could just use 3.2rem instead.

[@slayingthedragon]

Was it the tag ? If so that's some OG stuff, I think it's deprecated now Thank you ☺️❤️

[@badcatdesign]

Yeah that’s a strange one. Length units like PX and EM on fonts can be absolute or relative, but it’s confusing to realize the similarly named units like small and smaller are actually different - font-size:small; is absolute while font-size:smaller is relative. 🤯

[@theepicgamer5808]

@@slayingthedragon Looks like my comment from last night got deleted so trying again. No, the absolute font size "small", as in: html { font-size: small; }. They're still current.

[@slayingthedragon]

@@theepicgamer5808 Ohhh, tbh, I've never use that, sounds interesting

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wow. i am so happy i searched for a video on this and found Ramzay himself!!!

[@chrisuu__]

Amazing content. Looking forward to more. Liked (loved!) + subscribed for life

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Super. Thank you

[@dredamonsta1]

great stuff