One example is, when utilizing Modernizr, it is advisable to specify distinct principles according to supported functions:
inside the imported file, imports as regular, but in the event the CSS is created, "reference" selectors (and also any media queries that contains only reference selectors) aren't output. reference designs will not clearly show up as part of your produced CSS unless the reference designs are made use of as mixins or prolonged.
Extend is not able to match selectors with variables. If selector has variable, extend will disregard it.
In trying to stay as close as you possibly can for the declarative character of CSS, Less has opted to employ conditional execution through guarded mixins instead of if/else statements, while in the vein of @media query feature technical specs.
If you wish to make a mixin but you do not want that mixin to generally be as part of your CSS output, place parentheses once the mixin definition.
It might be handy to prepend a selector into the inherited (parent) selectors. This may be performed by Placing the & just after present-day selector.
Nevertheless, you would need to return an appropriate Less node for those who needed to, say, multiply that versus other values or check here do other Less functions. In any other case the output within your stylesheet is plain textual content (which can be great for your personal uses).
When you've got several matching mixins, all regulations are evaluated and merged, and the last matching worth with that identifier is returned. This is analogous to the cascade in CSS, and it lets you "override" mixin values.
The merge function allows for aggregating values from numerous Qualities into a comma or Area separated list under a single property. merge is helpful for Attributes such as history and transform.
If a ruleset is made up of numerous selectors, any of these can possess the prolong key phrase. Many selectors with lengthen in a single ruleset:
Occasionally, you may want to change the behavior of the mixin, based on the parameters you go to it. Let us get started with a little something essential:
Prolong by default looks for actual match concerning selectors. It does issue irrespective of whether selector makes use of main star or not. It does not issue that two nth-expressions contain the identical indicating, they need to must exact type so as to be matched.
Meaning, This is able to toss an error in two.x, as features needed to be Component of the worth of the residence or variable assignment:
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