diff --git a/components/form/__tests__/__snapshots__/demo.test.js.snap b/components/form/__tests__/__snapshots__/demo.test.js.snap
index d4f9f96885..24f137a2db 100644
--- a/components/form/__tests__/__snapshots__/demo.test.js.snap
+++ b/components/form/__tests__/__snapshots__/demo.test.js.snap
@@ -1208,6 +1208,80 @@ exports[`renders ./components/form/demo/register.md correctly 1`] = `
       </div>
     </div>
   </div>
+  <div
+    class="ant-row ant-form-item"
+  >
+    <div
+      class="ant-form-item-label ant-col-xs-24 ant-col-sm-6"
+    >
+      <label
+        class="ant-form-item-required"
+        for="website"
+        title="Website"
+      >
+        Website
+      </label>
+    </div>
+    <div
+      class="ant-form-item-control-wrapper ant-col-xs-24 ant-col-sm-14"
+    >
+      <div
+        class="ant-form-item-control "
+      >
+        <div
+          class="ant-select-lg ant-select-lg ant-select-show-search ant-select-auto-complete ant-select ant-select-combobox ant-select-enabled"
+        >
+          <div
+            aria-autocomplete="list"
+            aria-expanded="false"
+            aria-haspopup="true"
+            class="ant-select-selection
+                      ant-select-selection--single"
+            role="combobox"
+          >
+            <div
+              class="ant-select-selection__rendered"
+            >
+              <div
+                class="ant-select-selection__placeholder"
+                style="display:block;user-select:none;-webkit-user-select:none;"
+                unselectable="unselectable"
+              >
+                website
+              </div>
+              <ul>
+                <li
+                  class="ant-select-search ant-select-search--inline"
+                >
+                  <div
+                    class="ant-select-search__field__wrap"
+                  >
+                    <input
+                      class="ant-input ant-input ant-select-search__field"
+                      type="text"
+                      value=""
+                    />
+                    <span
+                      class="ant-select-search__field__mirror"
+                    >
+                       
+                    </span>
+                  </div>
+                </li>
+              </ul>
+            </div>
+            <span
+              class="ant-select-arrow"
+              style="user-select:none;-webkit-user-select:none;"
+              unselectable="unselectable"
+            >
+              <b />
+            </span>
+          </div>
+        </div>
+      </div>
+    </div>
+  </div>
   <div
     class="ant-row ant-form-item"
   >
diff --git a/components/notification/__tests__/__snapshots__/demo.test.js.snap b/components/notification/__tests__/__snapshots__/demo.test.js.snap
index 13f50039f1..6c013d84dd 100644
--- a/components/notification/__tests__/__snapshots__/demo.test.js.snap
+++ b/components/notification/__tests__/__snapshots__/demo.test.js.snap
@@ -22,6 +22,17 @@ exports[`renders ./components/notification/demo/custom-icon.md correctly 1`] = `
 </button>
 `;
 
+exports[`renders ./components/notification/demo/custom-style.md correctly 1`] = `
+<button
+  class="ant-btn ant-btn-primary"
+  type="button"
+>
+  <span>
+    Open the notification box
+  </span>
+</button>
+`;
+
 exports[`renders ./components/notification/demo/duration.md correctly 1`] = `
 <button
   class="ant-btn ant-btn-primary"
diff --git a/components/select/style/index.less b/components/select/style/index.less
index 650c45038f..614463755e 100644
--- a/components/select/style/index.less
+++ b/components/select/style/index.less
@@ -248,6 +248,7 @@
     }
 
     .@{select-prefix-cls}-search__field {
+      // https://github.com/ant-design/ant-design/pull/6018
       border: 0 @border-style-base @border-color-base;
       font-size: 100%;
       height: 100%;