feat: Additions for tables and io

- Add active state for rows
- New elements for io
- Remove unused SASS placeholders

elements/_tables.scss

@@ -101,7 +101,10 @@ tfoot {
 // Row
 // -----------------------------------------------------------------------------
 tr {
-
+	&.active {
+		color: config.$color_highlight_basic;
+		background-color: config.$color_action_basic;
+	}
 }
 
 // Cells

global/_common.scss

@@ -11,25 +11,6 @@
 
 // General classes
 // -----------------------------------------------------------------------------
-%size_content {
-	box-sizing: content-box;
-}
-
-%size_content_solo {
-	@extend %size_content;
-
-	*,
-	::before,
-	::after {
-		box-sizing: config.$box_sizing;
-	}
-}
-
-%size_io_button {
-	border: config.$width_border_io solid transparent;
-	padding: config.$padding_basic;
-}
-
 .di_none {
 	display: none !important;
 }

modules/io/_io_module.scss

@@ -23,7 +23,8 @@ footer {
 		nav label,
 		.a_button {
 			@extend %basic;
-			@extend %size_io_button;
+			border: config.$width_border_io solid transparent;
+			padding: config.$padding_basic;
 		}
 
 		.a_button {
@@ -35,7 +36,17 @@ footer {
 			flex-flow: row nowrap;
 		}
 
-		input:not([type="range"]) {
+		.group-input-wrap {
+			border: config.$width_border_io solid transparent;
+			padding: config.$padding_basic;
+			background-color: config.$color_back_io;
+
+			& > input {
+				margin: 0;
+			}
+		}
+
+		input:not([type="checkbox"], [type="range"]) {
 			@extend .input_io;
 		}