!SLIDE
# Math
## Is your best friend

!SLIDE long
# *Almost* every thing a designer does can be converted into some sort of mathmatical layout... *ALMOST*

!SLIDE
# Layout
``` scss
$wrapper-width      : 960px;
$sidebar-width      : 50px;
$main-content-width : $wrapper - $sidebar;

.wrapper {
  width : $wrapper-width;
}

.sidebar {
  width : $sidebar-width;
}

.content {
  width : $main-content-width;
}

```

!SLIDE
# Ranges
``` scss
@for $i from 1 through 4 {
  h#{$i} {
    @include header($i);
  }
}
```
!SLIDE
# Image demensions
``` scss
.play {
  left: ($width / 2) - (global-sprite-width(play_movie) / 2);
  top: ($height / 2) - (global-sprite-height(play_movie) / 2);
}
```