Should you use REM for font-size?
Should you use REM for font-size?
Use em only for sizing that needs to scale based on the font size of an element other than the html (root) element. Use rem unit for elements that scale depending on a user’s browser font size settings. Use rem as the unit for most of your property value.
What Is REM font-size?
According to the W3C spec the definition for one rem unit is: Equal to the computed value of font-size on the root element. This means that 1rem equals the font size of the html element (which for most browsers has a default value of 16px).
How do I change font-size in REM?
rem values are relative to the root html element, not to the parent element. That is, If font-size of the root element is 16px then 1 rem = 16px for all elements. If font-size is not explicitly defined in root element then 1rem will be equal to the default font-size provided by the browser (usually 16px).
What is 1.4 rem font-size?
In font-size: 1rem is equal to 16px. In font-size: 1.4rem is equal to 22.4px.
Why should we use REM instead of PX?
When user sets different font-size on browser, REM automatically scale up and down elements like fonts, images etc on the webpage which is not the case with PX. In the below gif left side text is set using font size REM unit while right side font is set by PX unit.
Should I use REM for width?
This unit is useful for avoiding compounding in width calculations, just as rem avoids font-size multiplier compounding. It can also be used for non-width properties, such as font-size (fitting a fixed fragment of text into a percentage-sized box) or height (preserving element aspect ratio).
What Is REM font?
To recap, the rem unit means “The root element’s font-size”. (rem stands for “root em”.) The
- with a class of rems take their sizing from the root element ( ). This means that each successive level of nesting does not keep getting larger.
How do you set 1 rem to 10px?
In order to easily use rem, we can modify 1rem to be equal to 10px and then make the following computations: X / 100 * 16px = 10px => X = 62.5 => if we want 1rem to be equal to 10px, then we have to set the font-size on our site to be 62.5% of the default font-size.
What is 1.2 rem in font size?
| font-size units | ||
|---|---|---|
| words | px | rem |
| large | 18px | 1.2rem 1.3rem |
| x-large | 24px | 1.4rem 1.5rem 1.6rem |
| xx-large | 32px | 2.0rem |
Should you use rem for padding?
Don’t use rem/em for paddings, margins and more.
What is the fallback for fonts that don’t support the rem-unit?
The same applies to the actual question where font-size: ($sizeValue * 10) + px;is the fallback for those browsers that don’t support font-size: $sizeValue + rem;. Or in short: browsers that don’t support the rem-unit on CSS valuesfallback to the CSS value with the px-unit.
What is the rem unit of font size?
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 */.
Is the PX+REM font size technique useful?
The way IE handles px font sizes means that the px+rem technique can be useful, but we’re still thinking in pixels.
What is the rem unit in HTML?
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. 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.
