diff --git a/_sass/helpers.scss b/_sass/helpers.scss
index dad1aae..5642b56 100644
--- a/_sass/helpers.scss
+++ b/_sass/helpers.scss
@@ -14,6 +14,19 @@
   &::-webkit-scrollbar { display: none; }
 }
 
+// Mismo alto que ancho
+.square {
+  @extend .position-relative;
+  padding-bottom: 100%;
+
+  & > * {
+    @extend .position-absolute;
+    @extend .top-0;
+    @extend .left-0;
+    @extend .h-100;
+  }
+}
+
 // Eventos del cursor
 @each $event in (none, auto) {
   .pointer-event-#{$event} {