Generated by SassMeister.com.

SassMeister-input-HTML.html

<button class='drpDwnRp'>Select...<span class='caret'></span></button> 
<ul class='dropdown-menu'> 
    <li><a><i class='glyphicon glyphicon-ok'></i>SELECT All</a></li> 
    <li><a><i class='glyphicon glyphicon-remove'></i>DELETE All</a></li> 
    <li class='divider'></li> 
    <li><a>LIST here</li> 
</ul> 

SassMeister-input.scss

// ----
// Sass (v3.4.14)
// Compass (v1.0.3)
// ----

$tile-size: 100px;
$tile-color: red green blue black;

.tile {
    width: $tile-size;
    height: $tile-size;
}

@each $color in $tile-color {
    $i: index($tile-color, $color);

    #tile#{$i} {
        @extend .tile;
        background-color: $color;
    }
}

SassMeister-output.css

.tile, #tile1, #tile2, #tile3, #tile4 {
  width: 100px;
  height: 100px;
}

#tile1 {
  background-color: red;
}

#tile2 {
  background-color: green;
}

#tile3 {
  background-color: blue;
}

#tile4 {
  background-color: black;
}

SassMeister-rendered.html

<button class='drpDwnRp'>Select...<span class='caret'></span></button> 
<ul class='dropdown-menu'> 
    <li><a><i class='glyphicon glyphicon-ok'></i>SELECT All</a></li> 
    <li><a><i class='glyphicon glyphicon-remove'></i>DELETE All</a></li> 
    <li class='divider'></li> 
    <li><a>LIST here</li> 
</ul>