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CSS Sass Basics Add Reusable Logic to Your Sass Storing Values in Maps

Kate C
Kate C
13,588 Points

How to decide which key('sm' , 'med' or... )as another local variable to @mixin mq($break)?

why Guil decide to use $sm as another variable instead of, for example, $med?

  $med: map-get($breakpoints, 'med'); 
  @if $value < 'med' {
    @media(max-width: $value){

I've tried to change variable to $med, the page seems the same.

Is there any reasons for the decision? Does setting $sm easier to divide breakpoints in the conditional statement?

the related media query sass from the video:

$breakpoints: (   
  'xs': 575px,
  'sm': 576px,
  'med': 768px,
  'lg': 992px,
@mixin mq($break){
  $value: map-get($breakpoints, $break);
  $sm: map-get($breakpoints, 'sm'); 
  @if $value < 'sm' {
    @media(max-width: $value){
  @else {
    @media(min-width: $value){

Thanks in advance.

1 Answer

Hi Kate,

I'm not sure if you've gotten an answer to your question yet, but the reason 'sm' is used in the original @if directive is because there is only one breakpoint smaller than 'sm' and that's 'xs'. If you replace 'sm' with 'med' your @if directive will apply the @content to screen sizes at the 'sm' or 'xs' breakpoints and you may want it to only apply to 'xs'. That's where the @else directive comes in. We want it to catch anything that gets past the first directive. You only want your original @if directive to apply to one true statement. If you change it to @if $value < $lg, it will catch 'xs', 'sm', & 'med'. It's best to have your initial directive apply to only one condition and then use @else if and @else to take care of the rest.

I hope this helps! Happy coding!