Frontsize - Exampe for scaleBackgroundSize mixin

example-scale-background-size.html

<div class="bottom-margin">A 32px size icon sprite create with a 16px svg sprite</div>
<div class="sprite-32"></div>

scale-background-size.less

.sprite-32 {
    @scale : 2;
    @spriteSize : 16px;
    @backgroundWidth : 512px;
    @backgroundHeight : 128px;
    
    .sprite("sprites-16.svg", @spriteSize);
    .size(@spriteSize, @spriteSize, @scale);
    .scaleBackgroundSize(@scale, @backgroundWidth, @backgroundHeight);
}

sprite minixs list