Dropped IE7

css/objects/_forms.scss

@@ -1,45 +1,48 @@
-input, select, textarea {
-	display: inline-block;
-	font: inherit;
-	line-height: $base-margin-bottom + px;
-	padding: 4px 8px;
-	color: $base-colour;
+input, 
+select, 
+textarea {
 	background: $input-background;
 	border: $input-border;
+	color: $base-colour;
+	display: inline-block;
+	font: inherit;
+	line-height: $base-margin-bottom * 1px;
+	padding: ($base-margin-bottom / 4) ($base-margin-bottom / 2);
 	width: 208px;
 }
 
+input[type="checkbox"], 
+input[type="radio"] {
+	background: transparent;
+	border: 0;
+	width: auto;
+}
+
 textarea {
-	min-height: ($base-margin-bottom * 4) + px;
+	min-height: ($base-margin-bottom * 4) * 1px;
 }
 
 .form__group {
-	margin-bottom: $base-margin-bottom + px;
+	margin-bottom: $base-margin-bottom * 1px;
 }
 
 .form__label {
-	float: left;
-	width: 140px;
+	font-weight: bold;
 }
 
 .form__controls {
-	margin-left: 160px;
 	@extend .clearfix;
 }
 
-	.checkbox input {
-		width: auto;
-	}
-
 .btn {
 	background: $btn-background;
 	border: $btn-border;
 	color: $btn-color;
 	cursor: pointer;
 	display: inline-block;
-	line-height: ($base-margin-bottom * 2) + px;
-	height: ($base-margin-bottom * 2) + px;
-	padding: 0 20px;
+	line-height: ($base-margin-bottom * 2) * 1px;
+	height: ($base-margin-bottom * 2) * 1px;
+	padding: 0 $base-margin-bottom;
 	width: auto;
 	&:hover {
 		background: $btn-background-hover;

css/objects/_nav.scss

@@ -1,9 +1,8 @@
 .nav {
 	list-style: none;
-	margin-left: 0;
+	margin: 0;
   >li {
       display: inline-block;
-      *display: inline;
     >a {
       display: block;
     }

css/objects/_scaffolding.scss

@@ -33,7 +33,7 @@
 }
 
 @for $i from 1 through $column-count {
-  .column-span-#{$i} { 
+  .col-span-#{$i} { 
     width: (((100 / $column-count) * $i) - (($column-gutter / $container-max-width) * 100)) * 1%;
     *width: (((100 / $column-count) * $i) - (($column-gutter / $container-max-width) * 100)) - .02 * 1%;
   }

css/objects/_tables.scss

@@ -1,21 +0,0 @@
-.table {
-	width: 100%;
-	border-collapse: collapse;
-}
-
-	.table th, 
-	.table td {
-		text-align: left;
-		vertical-align: top;
-		border-top: 1px solid $table-border-colour;
-		padding: ($base-margin-bottom / 2) * 1px 10px;
-	}
-	
-	.table th {
-		font-weight: bold;
-		border-top: 0;
-	}
-
-	.table thead th {
-	  vertical-align: bottom;
-	}