Added "scroll" layout for scrolling tests.

Added swiperjs rules that fix the height/vertical-scrolling issues of sliders.

layouts/styles/_page--view-swiper.scss

@@ -0,0 +1,9 @@
+.swiper {
+  &-slide {
+    width: initial;
+  }
+
+  &-wrapper {
+    height: initial;
+  }
+}

layouts/styles/page--view.css

@@ -5,13 +5,28 @@ body {
 main {
   margin-left: auto;
   margin-right: auto;
+  min-height: 100%;
+  overflow-x: hidden;
+}
+main .swiper-slide {
+  width: initial;
+}
+main .swiper-wrapper {
+  height: initial;
 }
 
 .body--iframe {
   overflow-y: hidden;
 }
 .body--iframe main {
-  overflow: auto;
+  overflow-y: auto;
+}
+
+.fullscreen_layout {
+  background-color: #9cc3ff;
+  min-height: 100%;
+  background-image: url("https://i.ibb.co/pjwL8D1/shapelined-JBKdviwe-XI-unsplash.jpg");
+  background-size: cover;
 }
 
 /*# sourceMappingURL=page--view.css.map */

layouts/styles/page--view.css.map

@@ -1 +1 @@
-{"version":3,"sourceRoot":"","sources":["page--view.scss"],"names":[],"mappings":"AAAA;EACE;;;AAGF;EACE;EACA;;;AAIF;EACE;;AAEA;EACE","file":"page--view.css"}
+{"version":3,"sourceRoot":"","sources":["page--view.scss","_page--view-swiper.scss"],"names":[],"mappings":"AAAA;EACE;;;AAGF;EACE;EACA;EACA;EACA;;ACPA;EACE;;AAGF;EACE;;;ADSJ;EACE;;AAEA;EAGE;;;AAIJ;EACE;EACA;EACA;EACA","file":"page--view.css"}

layouts/styles/page--view.scss

@@ -5,6 +5,11 @@ body {
 main {
   margin-left: auto;
   margin-right: auto;
+  min-height: 100%;
+  overflow-x: hidden;
+
+  // Fixes scrolling issues of swiperJS. Should be included in all projects.
+  @import "page--view-swiper";
 }
 
 // iFrame mode
@@ -12,6 +17,16 @@ main {
   overflow-y: hidden;
 
   main {
-    overflow: auto;
+    // If you change to "overflow: initial", the margin-top/bottom of first/last element will be not included.
+    // Test on fresh block setup where heading has margin-top.
+    overflow-y: auto;
   }
 }
+
+.fullscreen_layout {
+  background-color: #9cc3ff;
+  min-height: 100%;
+  background-image: url('https://i.ibb.co/pjwL8D1/shapelined-JBKdviwe-XI-unsplash.jpg');
+  background-size: cover;
+}
+