How to set a set of properties through a variable in sass?

Question

Sass

Is it possible to set a set of properties to a variable in sass and pass them to it?
For example, I do not want to write in every 2nd block

position:relative;
width:100%;
height:auto;

Can I put it in a more abbreviated way?

Answer 1

Or use mixins

@mixin mix1 {
  position:relative;
  width:100%;
  height:auto;
}

.selector {
  @include mix1;
}

Or extends. From placeholders

%set1 {
  position:relative;
  width:100%;
  height:auto;
}

.selector {
  @extend %set1;
}

or from classes

.someclass {
  position:relative;
  width:100%;
  height:auto;
}

.selector {
  @extend .someclass;
}