Generate Iceberg GTK theme and icons with oomox

home/.themes/oomox-iceberg/cinnamon/scss/sections/_notifications.scss

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+// notification system
+#notification {
+    @extend %bg-grad-to-right;
+
+    border-radius: $roundness;
+    border: 1px solid $exterior_border;
+    padding: 8px;
+    spacing-rows: 5px;
+    spacing-columns: 10px;
+    margin-from-right-edge-of-screen: 20px;
+    width: 34em;
+    color: $dark_fg_color;
+    &.multi-line-notification {
+        padding-bottom: 8px;
+        color: $dark_fg_color;
+    }
+    StEntry {
+        @extend %dialog-entry;
+
+        &:focus {
+            border: 1px solid $selected_border;
+        }
+    }
+    .url-highlighter {
+        link-color: $link_color;
+    }
+}
+.notification-with-image {
+    min-height: 159px;
+    color: $dark_fg_color;
+}
+#notification-scrollview {
+    max-height: 10em;
+    > {
+        .top-shadow {
+            height: 1em;
+        }
+        .bottom-shadow {
+            height: 1em;
+        }
+    }
+    &:ltr > StScrollBar {
+        padding-left: 6px;
+    }
+    &:rtl > StScrollBar {
+        padding-right: 6px;
+    }
+}
+#notification-body {
+    spacing: 4px;
+}
+#notification-actions {
+    spacing: 8px;
+}
+.notification-button {
+    @extend %shared-button;
+
+    border-radius: $roundness;
+    min-width: 5em;
+    min-height: 1em;
+    padding: $spacing_plus2;
+    &:hover {
+        @extend %shared-button-hover;
+    }
+    &:focus {
+        color: $selected_fg_color;
+    }
+    &:active {
+        @extend %shared-button-active;
+    }
+}
+.notification-icon-button {
+    @extend %shared-button;
+
+    border-radius: $roundness;
+    min-width: 2em;
+    min-height: 2em;
+    padding: $spacing_plus2;
+    &:hover {
+        @extend %shared-button-hover;
+    }
+    &:focus {
+        color: $selected_fg_color;
+    }
+    &:active {
+        @extend %shared-button-active;
+    }
+    > StIcon {
+        icon-size: 1.5em;
+    }
+}