diff --git a/css/properties/padding-block-end.json b/css/properties/padding-block-end.json
new file mode 100644
index 00000000000000..6c95726d4c484d
--- /dev/null
+++ b/css/properties/padding-block-end.json
@@ -0,0 +1,79 @@
+{
+  "css": {
+    "properties": {
+      "padding-block-end": {
+        "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/padding-block-end",
+          "support": {
+            "webview_android": {
+              "version_added": false
+            },
+            "chrome": {
+              "version_added": false
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": {
+              "version_added": false
+            },
+            "edge_mobile": {
+              "version_added": false
+            },
+            "firefox": [
+              {
+                "version_added": "41"
+              },
+              {
+                "version_added": "38",
+                "version_removed": "51",
+                "flag": {
+                  "type": "preference",
+                  "name": "layout.css.vertical-text.enabled",
+                  "value_to_set": "true"
+                }
+              }
+            ],
+            "firefox_android": [
+              {
+                "version_added": "41"
+              },
+              {
+                "version_added": "38",
+                "version_removed": "51",
+                "flag": {
+                  "type": "preference",
+                  "name": "layout.css.vertical-text.enabled",
+                  "value_to_set": "true"
+                }
+              }
+            ],
+            "ie": {
+              "version_added": false
+            },
+            "ie_mobile": {
+              "version_added": false
+            },
+            "opera": {
+              "version_added": false
+            },
+            "opera_android": {
+              "version_added": false
+            },
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": {
+              "version_added": false
+            }
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/css/properties/padding-block-start.json b/css/properties/padding-block-start.json
new file mode 100644
index 00000000000000..2a3fd25fb25cc5
--- /dev/null
+++ b/css/properties/padding-block-start.json
@@ -0,0 +1,79 @@
+{
+  "css": {
+    "properties": {
+      "padding-block-start": {
+        "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/padding-block-start",
+          "support": {
+            "webview_android": {
+              "version_added": false
+            },
+            "chrome": {
+              "version_added": false
+            },
+            "chrome_android": {
+              "version_added": null
+            },
+            "edge": {
+              "version_added": null
+            },
+            "edge_mobile": {
+              "version_added": true
+            },
+            "firefox": [
+              {
+                "version_added": "41"
+              },
+              {
+                "version_added": "38",
+                "version_removed": "51",
+                "flag": {
+                  "type": "preference",
+                  "name": "layout.css.vertical-text.enabled",
+                  "value_to_set": "true"
+                }
+              }
+            ],
+            "firefox_android": [
+              {
+                "version_added": "41"
+              },
+              {
+                "version_added": "38",
+                "version_removed": "51",
+                "flag": {
+                  "type": "preference",
+                  "name": "layout.css.vertical-text.enabled",
+                  "value_to_set": "true"
+                }
+              }
+            ],
+            "ie": {
+              "version_added": false
+            },
+            "ie_mobile": {
+              "version_added": false
+            },
+            "opera": {
+              "version_added": false
+            },
+            "opera_android": {
+              "version_added": false
+            },
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": {
+              "version_added": false
+            }
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/css/properties/padding-bottom.json b/css/properties/padding-bottom.json
new file mode 100644
index 00000000000000..68278e570f9f81
--- /dev/null
+++ b/css/properties/padding-bottom.json
@@ -0,0 +1,57 @@
+{
+  "css": {
+    "properties": {
+      "padding-bottom": {
+        "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/padding-bottom",
+          "support": {
+            "webview_android": {
+              "version_added": true
+            },
+            "chrome": {
+              "version_added": "1"
+            },
+            "chrome_android": {
+              "version_added": true
+            },
+            "edge": {
+              "version_added": true
+            },
+            "edge_mobile": {
+              "version_added": true
+            },
+            "firefox": {
+              "version_added": "1"
+            },
+            "firefox_android": {
+              "version_added": "4"
+            },
+            "ie": {
+              "version_added": "4"
+            },
+            "ie_mobile": {
+              "version_added": true
+            },
+            "opera": {
+              "version_added": "3.5"
+            },
+            "opera_android": {
+              "version_added": true
+            },
+            "safari": {
+              "version_added": "1"
+            },
+            "safari_ios": {
+              "version_added": true
+            }
+          },
+          "status": {
+            "experimental": false,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/css/properties/padding-inline-end.json b/css/properties/padding-inline-end.json
new file mode 100644
index 00000000000000..25c8a9b5e40bab
--- /dev/null
+++ b/css/properties/padding-inline-end.json
@@ -0,0 +1,94 @@
+{
+  "css": {
+    "properties": {
+      "padding-inline-end": {
+        "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/padding-inline-end",
+          "support": {
+            "webview_android": {
+              "alternative_name": "-webkit-padding-end",
+              "version_added": true
+            },
+            "chrome": {
+              "alternative_name": "-webkit-padding-end",
+              "version_added": "2"
+            },
+            "chrome_android": {
+              "alternative_name": "-webkit-padding-end",
+              "version_added": "2"
+            },
+            "edge": {
+              "version_added": null
+            },
+            "edge_mobile": {
+              "version_added": true
+            },
+            "firefox": [
+              {
+                "version_added": "41"
+              },
+              {
+                "version_added": "38",
+                "version_removed": "51",
+                "flag": {
+                  "type": "preference",
+                  "name": "layout.css.vertical-text.enabled",
+                  "value_to_set": "true"
+                }
+              },
+              {
+                "alternative_name": "-moz-padding-end",
+                "version_added": "3"
+              }
+            ],
+            "firefox_android": [
+              {
+                "version_added": "41"
+              },
+              {
+                "version_added": "38",
+                "version_removed": "51",
+                "flag": {
+                  "type": "preference",
+                  "name": "layout.css.vertical-text.enabled",
+                  "value_to_set": "true"
+                }
+              },
+              {
+                "alternative_name": "-moz-padding-end",
+                "version_added": "3"
+              }
+            ],
+            "ie": {
+              "version_added": false
+            },
+            "ie_mobile": {
+              "version_added": false
+            },
+            "opera": {
+              "alternative_name": "-webkit-padding-end",
+              "version_added": "15"
+            },
+            "opera_android": {
+              "alternative_name": "-webkit-padding-end",
+              "version_added": "15"
+            },
+            "safari": {
+              "alternative_name": "-webkit-padding-end",
+              "version_added": "3"
+            },
+            "safari_ios": {
+              "alternative_name": "-webkit-padding-end",
+              "version_added": true
+            }
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/css/properties/padding-inline-start.json b/css/properties/padding-inline-start.json
new file mode 100644
index 00000000000000..014bf0cd9a2d26
--- /dev/null
+++ b/css/properties/padding-inline-start.json
@@ -0,0 +1,94 @@
+{
+  "css": {
+    "properties": {
+      "padding-inline-start": {
+        "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/padding-inline-start",
+          "support": {
+            "webview_android": {
+              "alternative_name": "-webkit-padding-end",
+              "version_added": true
+            },
+            "chrome": {
+              "alternative_name": "-webkit-padding-start",
+              "version_added": "2"
+            },
+            "chrome_android": {
+              "alternative_name": "-webkit-padding-end",
+              "version_added": true
+            },
+            "edge": {
+              "version_added": false
+            },
+            "edge_mobile": {
+              "version_added": false
+            },
+            "firefox": [
+              {
+                "version_added": "41"
+              },
+              {
+                "version_added": "38",
+                "version_removed": "51",
+                "flag": {
+                  "type": "preference",
+                  "name": "layout.css.vertical-text.enabled",
+                  "value_to_set": "true"
+                }
+              },
+              {
+                "alternative_name": "-moz-padding-start",
+                "version_added": "3"
+              }
+            ],
+            "firefox_android": [
+              {
+                "version_added": "41"
+              },
+              {
+                "version_added": "38",
+                "version_removed": "51",
+                "flag": {
+                  "type": "preference",
+                  "name": "layout.css.vertical-text.enabled",
+                  "value_to_set": "true"
+                }
+              },
+              {
+                "alternative_name": "-moz-padding-start",
+                "version_added": "3"
+              }
+            ],
+            "ie": {
+              "version_added": false
+            },
+            "ie_mobile": {
+              "version_added": false
+            },
+            "opera": {
+              "alternative_name": "-webkit-padding-end",
+              "version_added": true
+            },
+            "opera_android": {
+              "alternative_name": "-webkit-padding-end",
+              "version_added": true
+            },
+            "safari": {
+              "alternative_name": "-webkit-padding-start",
+              "version_added": "3"
+            },
+            "safari_ios": {
+              "alternative_name": "-webkit-padding-end",
+              "version_added": true
+            }
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/css/properties/padding-left.json b/css/properties/padding-left.json
new file mode 100644
index 00000000000000..76ec1052a911fc
--- /dev/null
+++ b/css/properties/padding-left.json
@@ -0,0 +1,57 @@
+{
+  "css": {
+    "properties": {
+      "padding-left": {
+        "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/padding-left",
+          "support": {
+            "webview_android": {
+              "version_added": true
+            },
+            "chrome": {
+              "version_added": "1"
+            },
+            "chrome_android": {
+              "version_added": true
+            },
+            "edge": {
+              "version_added": true
+            },
+            "edge_mobile": {
+              "version_added": true
+            },
+            "firefox": {
+              "version_added": "1"
+            },
+            "firefox_android": {
+              "version_added": "4"
+            },
+            "ie": {
+              "version_added": "4"
+            },
+            "ie_mobile": {
+              "version_added": true
+            },
+            "opera": {
+              "version_added": "3.5"
+            },
+            "opera_android": {
+              "version_added": true
+            },
+            "safari": {
+              "version_added": "1"
+            },
+            "safari_ios": {
+              "version_added": true
+            }
+          },
+          "status": {
+            "experimental": false,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/css/properties/padding-right.json b/css/properties/padding-right.json
new file mode 100644
index 00000000000000..b9326b30bba4f4
--- /dev/null
+++ b/css/properties/padding-right.json
@@ -0,0 +1,57 @@
+{
+  "css": {
+    "properties": {
+      "padding-right": {
+        "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/padding-right",
+          "support": {
+            "webview_android": {
+              "version_added": true
+            },
+            "chrome": {
+              "version_added": "1"
+            },
+            "chrome_android": {
+              "version_added": true
+            },
+            "edge": {
+              "version_added": true
+            },
+            "edge_mobile": {
+              "version_added": true
+            },
+            "firefox": {
+              "version_added": "1"
+            },
+            "firefox_android": {
+              "version_added": "4"
+            },
+            "ie": {
+              "version_added": "4"
+            },
+            "ie_mobile": {
+              "version_added": true
+            },
+            "opera": {
+              "version_added": "3.5"
+            },
+            "opera_android": {
+              "version_added": true
+            },
+            "safari": {
+              "version_added": "1"
+            },
+            "safari_ios": {
+              "version_added": true
+            }
+          },
+          "status": {
+            "experimental": false,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/css/properties/padding-top.json b/css/properties/padding-top.json
new file mode 100644
index 00000000000000..a90bd5f200545b
--- /dev/null
+++ b/css/properties/padding-top.json
@@ -0,0 +1,57 @@
+{
+  "css": {
+    "properties": {
+      "padding-top": {
+        "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/padding-top",
+          "support": {
+            "webview_android": {
+              "version_added": true
+            },
+            "chrome": {
+              "version_added": "1"
+            },
+            "chrome_android": {
+              "version_added": true
+            },
+            "edge": {
+              "version_added": true
+            },
+            "edge_mobile": {
+              "version_added": true
+            },
+            "firefox": {
+              "version_added": "1"
+            },
+            "firefox_android": {
+              "version_added": "4"
+            },
+            "ie": {
+              "version_added": "4"
+            },
+            "ie_mobile": {
+              "version_added": true
+            },
+            "opera": {
+              "version_added": "3.5"
+            },
+            "opera_android": {
+              "version_added": true
+            },
+            "safari": {
+              "version_added": "1"
+            },
+            "safari_ios": {
+              "version_added": true
+            }
+          },
+          "status": {
+            "experimental": false,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/css/properties/padding.json b/css/properties/padding.json
new file mode 100644
index 00000000000000..e4ebad42208cb8
--- /dev/null
+++ b/css/properties/padding.json
@@ -0,0 +1,57 @@
+{
+  "css": {
+    "properties": {
+      "padding": {
+        "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/padding",
+          "support": {
+            "webview_android": {
+              "version_added": true
+            },
+            "chrome": {
+              "version_added": "1"
+            },
+            "chrome_android": {
+              "version_added": true
+            },
+            "edge": {
+              "version_added": true
+            },
+            "edge_mobile": {
+              "version_added": true
+            },
+            "firefox": {
+              "version_added": "1"
+            },
+            "firefox_android": {
+              "version_added": "4"
+            },
+            "ie": {
+              "version_added": "4"
+            },
+            "ie_mobile": {
+              "version_added": true
+            },
+            "opera": {
+              "version_added": "3.5"
+            },
+            "opera_android": {
+              "version_added": true
+            },
+            "safari": {
+              "version_added": "1"
+            },
+            "safari_ios": {
+              "version_added": true
+            }
+          },
+          "status": {
+            "experimental": false,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}