+@function min($value1, $value2) {
+ @if $value1 > $value2 {
+ @return $value2;
+ }
+ @else if $value2 > $value1 {
+ @return $value1;
+ }
+ @return $value1;
+}
+
+@function max($value1, $value2) {
+ @if $value1 > $value2 {
+ @return $value1;
+ }
+ @else if $value2 > $value1 {
+ @return $value2;
+ }
+ @return $value1;
+}
+
+@function top($box) {
+ @return parsebox($box, 1);
+}
+@function right($box) {
+ @return parsebox($box, 2);
+}
+@function bottom($box) {
+ @return parsebox($box, 3);
+}
+@function left($box) {
+ @return parsebox($box, 4);
+}
+@function vertical($box) {
+ @return top($box) + bottom($box);
+}
+@function horizontal($box) {
+ @return left($box) + right($box);
+}
+@function boxmax($box) {
+ @return max(max(top($box), right($box)), max(bottom($box), left($box)));
+}
+@function boxmin($box) {
+ @return min(min(top($box), right($box)), min(bottom($box), left($box)));
+}
\ No newline at end of file