Skip to main content

Home/ Web Development & Mobile App/ Group items tagged rem

Rss Feed Group items tagged

Vernon Fowler

Font sizing with rem - Snook.ca - 0 views

  • The problem with em-based font sizing is that the font size compounds. A list within a list isn't 14px, it's 20px. Go another level deeper and it's 27px!
  • The rem unit is relative to the root—or the html—element. That means that we can define a single font size on the html element and define all rem units to be a percentage of that. html { font-size: 62.5%; } body { font-size: 1.4rem; } /* =14px */ h1 { font-size: 2.4rem; } /* =24px */
  • I'm defining a base font-size of 62.5% to have the convenience of sizing rems in a way that is similar to using px.
  • ...3 more annotations...
  • consistent and predictable sizing in all browsers, and resizable text in the current versions of all major browsers
  • We can specify the fall-back using px, if you don't mind users of older versions of Internet Explorer still being unable to resize the text (well, there's still page zoom in IE7 and IE8). To do so, we specify the font-size using px units first and then define it again using rem units. html { font-size: 62.5%; } body { font-size: 14px; font-size: 1.4rem; } /* =14px */ h1 { font-size: 24px; font-size: 2.4rem; } /* =24px */
  • The compounding nature of em-based font-sizing can be frustrating so what else can we do?
Vernon Fowler

Can I use rem units - 0 views

  •  
    "Type of unit similar to "em", but relative only to the root element, not any parent element. Thus compounding does not occur as it does with "em" units."
Vernon Fowler

Web Typography: Using The Golden Ratio and REM's - Greg Rickaby - 0 views

  • First you need to set a default “root” font-size variable: html { font-size: 62.5% } Why 62.5% instead of 100%? Simplicity. Our default font is now 10px, which makes math easier. Now, 1.0rem = 10px. This becomes our $rembase.
  • Now your fonts will scale perfectly during a browser re-size (if using responsive design), or if a user were to zoom in or out.
  • What’s so awesome about the unitless line height? You only have to specify it once in the <body> tag. Now, ALL other line height(s) are relative to the parent font-size. That’s too easy! (Of course, you can still specify your own to maintain complete control.)
    • Vernon Fowler
       
      Shouldn't line-height also be refined whenever the container width changes?
  • ...5 more annotations...
  • Margins, or “vertical spacing” is calculated using either 24px or 48px to maintain vertical rhythm.
    • Vernon Fowler
       
      Where does the mystical value of 24px or 48px for vertical spacing margins come from?
  • By declaring REM’s after PX’s in the CSS this example  will degrade gracefully to the PX:
  • Line-height: 24px; for the win, you you stay right in the baseline ( until you start using a border bottom it throws it off by a pixel :p )
  • setting the root font size to 62.5% is a brilliant little trick
  • One note on the comment regarding vertical rhythm. I believe the 24px and 48px is dependent on your line-height. In your examples, you are using a line-height of 26px so I think the values should be 26px and 52px to maintain that rhythm.
1 - 3 of 3
Showing 20 items per page