docs: Restyle documentation landing page and community page (#24393)

docs/src/components/BlurredSection.tsx

@@ -0,0 +1,53 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+import React, { ReactNode } from 'react';
+import styled from '@emotion/styled';
+import { mq } from '../utils';
+
+const StyledBlurredSection = styled('section')`
+  text-align: center;
+  border-bottom: 1px solid var(--ifm-border-color);
+  overflow: hidden;
+  .blur {
+    max-width: 635px;
+    width: 100%;
+    margin-top: -70px;
+    margin-bottom: -35px;
+    position: relative;
+    z-index: -1;
+    ${mq[1]} {
+      margin-top: -40px;
+    }
+  }
+`;
+
+interface BlurredSectionProps {
+  children: ReactNode;
+}
+
+const BlurredSection = ({ children }: BlurredSectionProps) => {
+  return (
+    <StyledBlurredSection>
+      {children}
+      <img className="blur" src="/img/community/blur.png" alt="Blur" />
+    </StyledBlurredSection>
+  );
+};
+
+export default BlurredSection;