# deference between variable and mixin?

variable main hum ek value ko define kar skte hai.

$primary : #ccc;

body { color:$primary;} // use

mixin
mixin main hum ek se jayeda properties ko define kar sakte hai.

@mixin reset-list {
margin: 0;
padding: 0;
list-style: none;
}

@mixin horizontal-list {
@include reset-list;

li {
display: inline-block;
margin: {
left: -2px;
right: 2em;
}
}
}

nav ul {
@include horizontal-list;
}