Build lists with Sass-placeholders

SassMeister-input.scss

// ---
// Sass (v3.2.9)
// ---


// ------- Links -----------------------------
%a-tdn-tdu{
    text-decoration: none;
	&:hover, &:focus {text-decoration: underline;}
}

// -------- Listen -------------------------

// Die Basis - hier werden die Listenmarkierungen und Abstände entfernt.
%resetList{
	list-style-type: none;
	&, li {
		margin-left: 0;
		padding-left: 0;
	}
}

%noList {
	@extend %resetList;
	a {
		display: block;
		@extend %a-tdn-tdu;
	}
}

// einfache Liste ohne separate Abstände, Listenmarkierungen oder Linien 
.simpleList {
    @extend %noList;
}

// Listeneinträge haben untere Linie 
.linedList {
	@extend %noList;
	li {
		a {
			border-top: 1px solid #cecece;
			padding: 3px 0;
		}
		&:first-child a {
			border-top: none;
			padding-top: 0;
		}
	}
}

SassMeister-output.css

.simpleList a, .linedList a {
  text-decoration: none;
}
.simpleList a:hover, .linedList a:hover, .simpleList a:focus, .linedList a:focus {
  text-decoration: underline;
}

.simpleList, .linedList {
  list-style-type: none;
}
.simpleList, .linedList, .simpleList li, .linedList li {
  margin-left: 0;
  padding-left: 0;
}

.simpleList a, .linedList a {
  display: block;
}

.linedList li a {
  border-top: 1px solid #cecece;
  padding: 3px 0;
}
.linedList li:first-child a {
  border-top: none;
  padding-top: 0;
}