Are you using the right CSS units?

[@einfachnurlegendar7947]

Summary: font-size: rem width: % in combination with a max-width, ch height: question urself "do i rly need to set height" if yes -> use a min-height padding/margin: rem or em, kevin often uses em for padding of buttons media queries: em px only for little things like shadows, borders etc. Great Video :)

[@kedigiller111]

Just I'm looking for this, thanks :D

[@JErock25]

Thank you!

[@colindante5164]

Thanks ))

[@DilshanPuwanendran]

thanks mate

[@tabhesab3555]

Thanks

[@TheBigCheez365]

This is such a solid channel. Literally my go-to for any and all things CSS. You da man Kevin.

[@yasuekko8814]

Indeed 🔥

[@ErikZettersten]

Second this

[@juanmartinguillen4876]

I concord

[@robs257]

I agree

[@dr_corrupt1014]

kevin you are the man!

[@andreschavarria7091]

Ok so I’m 37 years young and decided to learn html/css with absolutely 0 experience and knowledge about coding or programming. Your channel has made things way easier for me to understand. So I guess I just want to say thank you and recognize the importance of sharing and the impact you’re making.... thanks!

[@toddhoward5947]

All the best man ❤

[@samuelgoncalves5616]

Love that you are trying to learn! That's the way to go. Just out of curiosity, why did you start learning?

[@rellison68]

Hi Andres. I am 52 and am returning to development after about 10 years off. I really appreciate channels like this to help out. Good luck!

[@andreschavarria7091]

@@rellison68 thanks Robert, and good luck to you too! Agree with you, channels like this show some of the greatest benefits of platforms like KZbin... sharing IS caring

[@andreschavarria7091]

@@samuelgoncalves5616 thanks Samuel! My wife started doing volunteering at her job, but one requirement is that whoever they’re volunteering for, must have a website and must of them don’t have one... so I said to her... I can build them a website, I’m sure that’s easy! Ha, little did I know... lol. And so I started learning literally 32 days ago. It’s a win win situation, they get the website and I get to learn.

[@cmyk8964]

For basic HTML games, I define a custom variable in the root relative to the viewport width/height (e.g. min(4vw, 3vh)) and calc everything else relative to that

[@patriknordberg1259]

I think you missed out on CSS Grid and using fractions or fr. Which I think should be very relevant at this time. People really need to start embracing CSS Grid as it makes your layout so much cleaner and allows you to keep your HTML semanticly correct. Appreciated the comment about ch. I hadn't used that so much and it really makes sense for column sizes.

[@lofi_stations]

I discovered this channel a few days ago, I learned more about mobile responsive design than anywhere else and feel more confident using CSS. Kevin, you're a real one

[@rohitkf8474]

Font size : use rem Width : coupled with max width, use ch unit(75 or less) Height : set min height Padding or margin : em(padding for buttons) or rem Medi queries : em

[@TheJacklwilliams]

The ironic thing, as newb, I've used pixels for most everything because? I haven't the slightest idea of the definition and proper usage of the units you mentioned... Which of course, calls out the immediate need for me to, learn them, and use them accordingly. Thanks for this Kevin. I'm enjoying your content very much.

[@tomasjsierra]

After watching this I improved my site by a lot, I think. Such a big difference in just 6 minutes of video. Many thanks.

[@lofi_stations]

Same!! made a new css which went from 1000 lines to 700 for my website

[@CodingNuggets]

The CSS GOAT bringing everyone some very useful info. Appreciate you Kevin. See you soon!

[@TheMatcap1]

After deploying some sites on html and css i started watching your tutorials and i´m totally impressed, you really helped me a lot improving my css styling an writing. Thanks!

[@kiggi__]

I am playing catch up with everything HTML, CSS, Javascript. Your video's are fantastic at helping me get to grips with all that has changed, keep up the awesome content!

[@VasilyPavlik]

Man, after your videos I started to use REMs. And it's marvelous. Because you can change only one font-size for body in media-query. And that's all. It works like variables even in IE. Now I'm thinking in REMs everywhere. Our body default font size is 10px, so it's quite easy to calculate. But it's also easy to scale layouts for any screen size depends on media. Thank you a lot!

[@erichobbs4042]

I learned about Ch from one of Kevin's other video's last year. It's my go to unit for designing text layout now.

[@maxwellandyaffanyi7499]

🙌🙌🙌👏.... You be CSS bossu 🥳🥳 😄Kudos from Ghana🇬🇭

[@theorycreative]

Great video! It definitely gets confusing sometimes, especially if you’re hours into a project, getting tired and start making mistakes. I’m still a designer at heart, even though I’ve been writing code for decades, it’s not often enough to keep track of everything... and then throw math into the mix after a long day, d’oh!

[@ViorelMocanu]

My rules of thumb are: » % or vw for box widths » % or vh for box heights (indeed, rarely) » rem or em for font sizes, leadings, and other type-related dimensions (e.g. image sizes sometimes) » em for paddings and margins » px for border widths (especially when aiming for that 1px crisp) and media queries (will take a look at the article you recommended, but in principle, it worked well for me so far) and widths and heights (even if I override them in CSS in other units) » ch for paragraph max-widths

[@Brunoenribeiro]

.kevin__coat { display: flex; justify-content: flex-start; }

[@ivanberdichevsky5679]

I think this has align-items: flex-end actually 😂

[@akifcankara2225]

.kevin__tshirt:nth-child(even){ background: pink; } .kevin__tshirt:nth-child(odd){ background: whitesmoke; } .kevin__tshirt:nth-child(3n){ background: grey; }

[@sumitpurohit8849]

.kevin__coat { align-items: space-between; }

[@ari-mcbrown]

weird flex, but okay

[@Springfielde]

I really like that you add your face to your content. It makes things much more direct, so it's easier to learn. :)

[@MasayaShida]

Thanks so much for this I'm always insecure about what units to use

[@Coco-ii2pu]

You're the best tutor online Kevin. And somehow you have all the answers 😂. Thank you

[@mikaockerman832]

Our designers want things to look consistent across sizes, fully responsive, and they also make very complex designs. This means the headings, boxes, margins, padding all needs to adjust to screen size. I find myself using Calc with VW quite often. I don't know of that's the best way, but it has been working for me. I do use REM for font size whenever I can though. Thanks!!

[@tonybell1597]

Thankyou! I’ve very recently arrived at coding a website for a group of people, having managed to avoid html, css and Java since Sir Tim B-L invented it! (Odd as I’ve been in this business for 40+ years) and now I’m here! Wow…. Thank you so much for your vids, they have been superb at explaining principles … keep up the grand work…

[@arceniocornejo6779]

I'm trying to learn more about css "little tiny details" for many years. I know your videos will be helpful to learn the subtle details hidden in this languages. Thanks very much for your efforts to disseminate these important techniques. PD I am a retired professor from Panama.

[@doug7897]

Due to writing a lot of wordpress stuff, I've avoided using the 62.5% font-size trick since that breaks certain styles in the admin. Instead I have a SASS function called rem(), which just takes whatever pixel value I want to have, and devides by 16 to convert to rems. Definitely a few more characters to type (painfully so), but I've honestly gotten used to it and outside of the awkwardness using them in things like long padding declarations, it's been pretty nice. Untill the designer uses inspector to figure out size adjustments and gives me values in REMs that I have to convert back to pixel values. Then it's hell.

[@aceandember]

So, today something clicked and I owe it all to you Mr Powell. I have been doing CSS/SCSS almost every day for a few years but I didn't grasp the concept of parent height affecting the height of children until I watched one of your videos (you do great btw, ty). I struggled with dealing with it for a long time and today I was tackling a typical challenge, one where a div dynamically pops up from the bottom and I had to size the content above so that it could handle a custom scrollbar etc. Anyway, due to your videos, I walked it through and it worked the first time! Often I'd struggled over this similar scenario with other elements and had to guess, refresh, and just sort of luck my way into it. Now I get it! TY TY TY!!

[@jackr9122]

Kevin thank you so much man - the clarity I get from these videos is unreal. Keep it up, my friend!

[@imluctor5997]

You can also make a function in scss to calculate the pixels to rem. I always use that and call the function px-to-rem() if you take this in use make sure you don't have to put a value with px at the end to make it faster to write it.

[@mountainslopes]

I like the idea of px for html font size (can change with breakpoints), rem for components, and em for elements within those components.

[@KevinPowell]

For accessibility reasons, it's really important not to set the html font size with a pixel value. Assume the default is 16, and use a percentage. You can still scale that number up and down within breakpoints :)

[@maitolehrer2613]

I've been looking for this kind of video for a long long time now. Thank you so much for this!

[@dimitrys.2494]

i thought you had like a million plus followers. you are my go to guy if i don't understand something in css. let's try and bring you to at least half a mil. i'm sharing for sure all the time ! you go man!

[@antoniomasotti8060]

I love this man and his videos. You see immediately how experienced he is and still humble and willing to help. And the advices are always top, they greatly improved the way I use css.

[@doubledeckercouch6251]

Excellent video - and something which needed a quick reference point to "flick back to". Thanks Big K :)

[@asdfasdfsdflk]

This is so useful for how short it is; I really appreciate this content.

[@haliszekeriyaozkok4851]

When ı wasn't know the difference between relative and absolute units ı used to the absolute units and because of that struggled with media queries. Thanks to Allah ı learned them and now my layouts even more responsive and ı don't use media queries too much.

[@troelsrasmussen7457]

Realy nice example with the button where padding is defined using em! Good job and nice videos - thanks!

[@A_Lesser_Man]

css is the bane of my existence, you make it bareable!

[@SalmanSharieff-One]

I tend to use "em" for button padding, When text of my buttons are of different sizes, because if you are using fluid typography "em" will resize based on font size, much better alternative, since i use svg icons for my buttons.

[@AnandKumarChaudhary]

Kevin has unparalleled skill of explaining highly complex concepts in very simple manner. Great Work!!!!

[@necroowl3953]

Thanks a lot, Kevin, your videos are awesome and very complete. This used to be super boring to me, and your content got me interested in actually learning SCSS.

[@mmelimahlobo7656]

I am forever grateful for having such people like you,every time I am stuck with css I know you will be the solution to my problem may the Lord increase you more and more

[@nymusicman]

Been a rem user for a long time and love it. First time learning about ch. I'm very excited to start using it in some of my websites.

[@wickedwifestre]

this was extremely helpful. i’m pretty new to css so this gives me a lot of good stuff to think about. thank you!

[@snaydenoff]

Great video! As a product designer who has just started writing my own html/css, I find your videos really useful! It would be great for beginners if you could expand on the issues with examples, such as what issues using the viewport width would cause. ✌️

[@GR_BackingTracks]

@ 4:21 is my favorite of the tips... I'm a brand newbie to this stuff and this seems perfect for the site I'm making.

[@georgiosg9464]

this cool person is the only one who making me enjoy his content , describe it as much as simple he can!

[@Priority64]

In addition to awesome content you put out constantly, I also have to admire that your videos are CRISP! Love that not only your content is hiqh quality but your video quality too.

[@MaulikParmar210]

I still prefer ems over rems when it makes sense with math and size ratios, it makes life easier when done with pre-processor. It's all about design aesthetics, math and design systems we use. Different people have different design system preferences and there's nothing wrong with it. At the end pixel perfect output matters when it comes to design.

[@mabelwin4779]

THANKS U SO MUCH❤😢WITH your videos, now I become understanding about front end working .the videos are right to the point and save time❤🎉

[@yahayaoyinkansola8258]

Thank you so much Kevin for this particular video!, it really clarified a lot for me

[@DANNFIGDESIGNS]

This was the video I was looking for. I know how the units work, but where to use them busted my brain. For the most part I was using vh and vw to much. Also, I was using em for my font sizes, and the parents all the way up were using em as well. Also the whole concept presented here will stick. Thank you Kevin. Big fan. Update: I read the article regarding the media queries and I'm curios if it's still relevant today. It definitely was written a long time ago. I'm using Webflow and was surprised to see them using px for media queries.

[@chrislife1101]

Kevin, I'm a dumbass, it's hard for me to pick up the simplest concepts, but idk how you do it. You just make my brain work with ur explanations. Currently following a Udemy course and alot of the properties etc are poorly explained, so I come here

[@md.farukuzzaman3911]

Kyle(WDS) said, you are the guru of css, i think you are also the guru in presentations.

[@zummon]

Browser setting is the main point of using *rem* . Just like dark and light mode. People preference is just infinite amount of works for developer/designer. And using *rem* helps a lot for sizing.

[@RahulKumar-jx5ku]

You are making my job easier, Kevin. Thank you very much for that.

[@90kidsgamezone76]

You are the man who learn me a lot of love with css

[@Reckless917]

Amazing video as always. Super concise and well explained, thanks a lot!!

[@penggunayoutube2580]

I always check a video or two from this channel. All of them is really helpful in my road on web development learning Love your content

[@DrewBombard]

Just found Kevin last week. Wow… so awesome and easy to understand examples and tutorials and … just amazing.

[@KevinPowell]

So glad you're enjoying my content!

[@PharoahJardin]

Just came from your video telling me to avoid using percentages for widths but here you recommend it... Also why not get into the nitty gritty? People clicked on the video to know about the details of CSS units. Everyone already knows the basics. Had to google rem vs em.

[@0the0ambient0]

Kevin ~ You are amazing . So much ambiguity yet you find clarity

[@ru2979]

Sir .This is a ultimate web dev channel . Kudos to your hard work and love your videos ❤️☺️

[@utkarshagrawal3640]

This is what i do...... html { font-size : 62.5%. [That is around 10px = 1rem] } then I use rem and em everywhere, helps a lot in responsiveness!

[@dancehalllyrics1303]

Thanks! I might try to adapt that into my pen future projects!

[@LanFeusT23]

This is a good solution, because then 1.5rem is very easily understood as "15px". That being said, when I do that I add body { font-size: 1.6rem } to bring back the default font size to 16px. Although I personally prefer leaving 100% on the html and only changing it for media query. If my designers want a default 14px (which I usually fight back against) then I'll do a body { font-size: 0.875rem }

[@utkarshagrawal3640]

@@LanFeusT23 this is not a good idea, bcs let say u add body { font-size : 0.625rem} And u have a parent div and a child div div#parent { font-size : 2em width : 2em } _____________ div#child { width : 2em } here the width of the child would be 80px and for parent would be 40px...... ________ where as rem unit would refer to the root element only and so to ease the multiplications i used html font size 62.5%

[@LanFeusT23]

@@utkarshagrawal3640 You make a good point, but I guess I should have added I don't use em units, ever. I find that using almost exclusively rem is a better and easier way to deal units. Using a large button is a good example that Kevin makes, but I'd rather just have a class that states what my font-size and margins are when large than having to deal with rem and em. If everything is rem you almost never have any issues!

[@in43sh]

does it work for static websites?

[@dragonore2009]

Same here I don't use pixels as much anymore. For when I do use them, it's usually some margin left or right that needed 4px or something. The only big use I have for pixels is sometimes I will use them for min-widths where appropriate.

[@lieutenantlascivious1992]

Thank you so much! I learn so many little tricks and get so many great suggestions from your videos!

[@micahhlc]

the best CSS teacher in youtube.

[@cmdaltctr]

THANK YOU THANK YOU! I have been wondering about this as a beginner and this helped me termendously!

[@TheMoonLayingLow]

This is so helpful! Thank you for sharing your knowledge, Kevin.

[@stefanofrontani2220]

So clear. You've just won a new subscriber.

[@KevinPowell]

Welcome aboard!

[@lostcarpark]

That's really helpful. I occasionally need to design things for print, and sometimes for label printers, so need to be able to control exact size on the page. I generally use cm or mm with media queries for these.

[@KevinPowell]

I come from a print background, and the idea of using fixed units like that in CSS scares me so much, lol. But it does the job!

[@lostcarpark]

@@KevinPowell Absolutely. I think in most cases fixed units are to be avoid. There are just occasions when something needs go to a printer, and needs to fit precise measurements. Mostly this will be for admin pages that end users will never see.

[@mechmaverick]

literally subbing because the "ch" explanation

[@stevepiraud7629]

Awesome, like always!

[@md.siddiq7165]

I set up font-sizes with vw and also I needed to make them responsive with media queries. Yeah I know that's a lot of work. I didn't find my way out with rem for font-sizes 🙂🙂

[@joeldcanfield_spinhead]

When possible, I use calc(X.Xvw + 0.Xrem) - I haven't stopped to do the math yet, but I'm planning to come up with a formula that always works.

[@md.siddiq7165]

@@joeldcanfield_spinhead Thanks. Yeah I will try for that kind of formula too. Let me know if you can figure that out.

[@jimhalpert9803]

I'd rather just use rem with media queries set at the breakpoints when the font starts getting weird.

[@KoalaBerzerker]

Ah well, I just did a small self-paced course on HTML and CSS. I can do some stuff but the more I watch your videos the more I know that I don't know crap.

[@centrumsaiyan7623]

Noooooooooooo Why didn't I came across this channel earlier in my life.

[@mrx-qi8th]

Nice,thanks for sharing your information. I've always clicked the like button even if i didn't have the time to watch it at the moment

[@guillermoandradaFSD]

Thank you so much... You channel is awesome

[@enos5192]

Trust me when I say Kevin is really underrated

[@williamboshi1855]

This topic interested so much I liked before watching, I hope the algorithm gods noticed

[@vojkanbg]

When setting the value of REM units, do you round or do you use full 3 or 4 decimal places? I mean for 21px on the front end, do you set 1.3125 rem, 1.313 rem, 1.31 rem, or 1.3 rem?

[@shahshail12]

Hey Kevin, your videos are awesome 👌, just wanted to ask you that is it a good practice to give margin top & bottom in vw?

[@jensensphotography4570]

Shit that’s cool about the html font size to make calculating the rem size a lot easier

[@eddymison3527]

75 chars per line.. that's new to me. Thanks a lot.

[@Vreth6]

You nailed the thumbnail on this one 😂

[@TheDMaciek]

Thanks man! Great video

[@adedimolao9094]

This page is a goldmine

[@kblyr]

Awesome! This is really very helpful, thank you!

[@tommy6322]

I am not sure. But hopefully you will clear things up for me! :) Love your videos!

[@nico220790]

Percentages (except for fonts) and viewport units don't play well with the accessibility of your website. Some users need to use the zoom function and those units don't play well with that. Always use em for your media queries, not only for compatibility reasons but for accessibility as well. It will allow for the media queries to kick in when the user is zooming again just like it would when the viewport changes in size. Accessibility is easily overlooked, but some simple/low-maintenance tricks like these are a breeze to implement. Would be waste potential when ignored.

[@krishchandrahasan7955]

I see this being done all the time. Devs, in fact entire teams use rems for font sizes because, you know, they've probably heard that using pixels are bad and then they do two things. 1. Set the base font size in pixels (defeats the purpose of using ems end rems) OR 2. Use pixels for media queries along with REM font sizes - this completely destroys layouts when the media query kicks in and the base font is not 16px.

[@PlayRiteProductions]

Video is gold, thanks so much!

[@jovanlaguitao3384]

Very helpful Kevin thank you so much!!

[@fabulousman3999]

I used dvw in setting width and dvh in setting height

[@Andrei-xb1pz]

Cool video! I don't like CSS but you make me hate it less

[@vasiovasio]

Great video! Thank you!

[@PaulNieman]

Brilliant and helpful advice. Thank you.

[@timbittins]

If you would be a rapper, your name would be EmiRem

[@huynh4128]

This is the video i needed right now

[@creatorshorizon5125]

Em: will the real slim unit, please stand up!

[@KasumovMedia]

Kevin after watching your channel religiously for 3 months I feel like I plugged into the matrix and downloaded some expert coder experience

[@Football__Junkie]

Great video. Actionable and to the point