added cover block support and .fullwidth class

assets/styles/layout/_main.scss

@@ -0,0 +1,89 @@
+.wp-block-cover {
+  position:relative;
+  overflow-x: hidden;
+
+  img {
+    width: 100%;
+
+    @include resp-max($breakpoint-md) {
+      width: 120%;
+      max-width: unset;
+      height: auto;
+      position: relative;
+      left: 50%;
+      transform: translateX(-50%);
+    }
+
+    @include resp-max($breakpoint-sm) {
+      height: 80vh;
+      width: auto;
+      position: relative;
+      left: 70%;
+    }
+
+    @include resp-max($breakpoint-xs) {
+      left:100%;
+    }
+  }
+
+  .wp-block-cover__inner-container {
+    position: absolute;
+    bottom:50%;
+    left: 50%;
+    transform: translate3d(-50%,50%,0);
+    width: 100%;
+    z-index: 3;
+  }
+}
+
+.fullwidth {
+
+  &.row {
+    gap:20px;
+
+    &::before,
+    &::after {
+      display:none;
+    }
+
+    @include resp-min($breakpoint-sm) {
+      .col {
+        padding-left:0;
+      }
+    }
+  }
+
+  @include resp-min($grid-max-width) {
+    margin-left: calc(0px - $grid-gutter - ((100vw - $grid-max-width) / 2));
+    margin-right: calc(0px - $grid-gutter - ((100vw - $grid-max-width) / 2));
+  }
+
+  @include resp-max($grid-max-width - 1) {
+    margin-left: calc(0px - $grid-gutter);
+    margin-right: calc(0px - $grid-gutter);
+  }
+
+  @include resp-max($breakpoint-sm) {
+    >* {
+      padding-left: $grid-gutter;
+      padding-right: $grid-gutter;
+    }
+  }
+
+  >div.is-layout-constrained {
+    @include clearfix;
+    max-width: $grid-max-width;
+    margin: 0 auto;
+    padding: 0 $grid-gutter;
+
+    >div.row {
+      @include resp-max($breakpoint-sm) {
+        margin-right: -$grid-gutter;
+
+        .col {
+          padding-right: $grid-gutter;
+        }
+      }
+    }
+  }
+}