Complex Form Layout (https://stackoverflow.com/a/48189606/5846045)

<!DOCTYPE HTML>
<html style="height: 100%;">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Demo</title>
  <script id="sap-ui-bootstrap"
    src="https://openui5.hana.ondemand.com/resources/sap-ui-core.js"
    data-sap-ui-theme="sap_fiori_3"
    data-sap-ui-oninit="module:sap/ui/core/ComponentSupport"
    data-sap-ui-async="true"
    data-sap-ui-compatVersion="edge"
    data-sap-ui-resourceroots='{"demo": "./"}'
    data-sap-ui-xx-componentPreload="off"
    data-sap-ui-xx-waitForTheme="true"
  ></script>
</head>
<body id="content" class="sapUiBody">
  <div data-sap-ui-component
    data-id="rootComponentContainer"
    data-name="demo"
    data-height="100%"
    data-settings='{"id": "rootComponent"}'
  ></div>
</body>
</html>

sap.ui.define([
  "sap/ui/core/UIComponent",
  "sap/ui/Device",
], function(UIComponent, Device) {
  "use strict";

  return UIComponent.extend("demo.Component", {
    metadata: {
      manifest: "json"
    },

    init: function() {
      UIComponent.prototype.init.apply(this, arguments);
      this.getModel("device").setData(Device);
      this.getRouter().initialize();
    },

  });
});

{
  "_version": "1.16.0",
  "start_url": "index.html",
  "sap.app": {
    "id": "demo",
    "type": "application",
    "title": "Demo",
    "description": "Sample Code",
    "applicationVersion": {
      "version": "1.0.0"
    }
  },
  "sap.ui": {
    "technology": "UI5",
    "deviceTypes": {
      "desktop": true,
      "tablet": true,
      "phone": true
    },
    "supportedThemes": [
      "sap_belize_hcw",
      "sap_belize_hcb",
      "sap_belize_plus",
      "sap_belize",
      "sap_fiori_3"
    ]
  },
  "sap.ui5": {
    "dependencies": {
      "minUI5Version": "1.67.0",
      "libs": {
        "sap.ui.core": {},
        "sap.m": {},
        "sap.ui.layout": {}
      }
    },
    "contentDensities": {
      "compact": true,
      "cozy": true
    },
    "resources": {
      "js": [
        
      ],
      "css": [
        
      ]
    },
    "models": {
      "device": {
        "type": "sap.ui.model.json.JSONModel"
      }
    },
    "rootView": {
      "viewName": "demo.view.App",
      "id": "rootView",
      "type": "XML",
      "async": true
    },
    "routing": {
      "routes": [{
        "name": "home",
        "pattern": "",
        "target": "home",
        "titleTarget": "home"
      }],
      "targets": {
        "home": {
          "viewId": "homeView",
          "viewName": "Home",
          "transition": "fade",
          "viewLevel": 1
        },
        "notFound": {
          "viewName": "Home",
          "transition": "slide",
          "viewLevel": 98
        }
      },
      "config": {
        "async": true,
        "routerClass": "sap.m.routing.Router",
        "viewType": "XML",
        "viewPath": "demo.view",
        "controlId": "rootApp",
        "controlAggregation": "pages",
        "transition": "slide",
        "bypassed": {
          "target": "notFound"
        },
        "homeRoute": "home"
      }
    }
  }
}

<mvc:View xmlns:mvc="sap.ui.core.mvc" xmlns="sap.m" displayBlock="true">
  <App id="rootApp">
    <pages>
      <!-- Navigated views will be added by routing mechanism -->
    </pages>
  </App>
</mvc:View>

<mvc:View xmlns:mvc="sap.ui.core.mvc" xmlns="sap.m">
  <Page id="homePage" title="Form Layout" class="sapUiResponsiveContentPadding">
    <form:Form editable="true" xmlns:form="sap.ui.layout.form">
      <form:layout>
        <form:GridLayout backgroundDesign="Solid"/>
      </form:layout>
      <form:FormContainer>
        <form:layoutData>
          <form:GridContainerData
            halfGrid="{:= ${device>/resize/width} > 600}"
          />
        </form:layoutData>
        <form:FormElement>
          <form:label>
            <Label text="Label"/>
          </form:label>
          <Input placeholder="Input"/>
        </form:FormElement>
      </form:FormContainer>
      <form:FormContainer>
        <form:layoutData>
          <form:GridContainerData
            halfGrid="{:= ${device>/resize/width} > 600}"
          />
        </form:layoutData>
        <form:FormElement>
          <form:label>
            <Label text="Label"/>
          </form:label>
          <Input placeholder="Input"/>
        </form:FormElement>
      </form:FormContainer>
      <form:FormContainer>
        <form:FormElement>
          <form:label>
            <Label text="Label"/>
          </form:label>
          <TextArea placeholder="Text Area"/>
        </form:FormElement>
        <form:FormElement>
          <form:label>
            <Label text="Label"/>
          </form:label>
          <TextArea placeholder="Text Area"/>
        </form:FormElement>
      </form:FormContainer>
      <form:FormContainer>
        <form:layoutData>
          <form:GridContainerData
            halfGrid="{:= ${device>/resize/width} > 600}"
          />
        </form:layoutData>
        <form:FormElement>
          <form:label>
            <Label text="Label"/>
          </form:label>
          <TextArea placeholder="Text Area"/>
        </form:FormElement>
        <form:FormElement>
          <form:label>
            <Label text="Label"/>
          </form:label>
          <Input placeholder="Input"/>
        </form:FormElement>
      </form:FormContainer>
      <form:FormContainer>
        <form:layoutData>
          <form:GridContainerData
            halfGrid="{:= ${device>/resize/width} > 600}"
          />
        </form:layoutData>
        <form:FormElement>
          <form:label>
            <Label text="Label"/>
          </form:label>
          <Input placeholder="Input"/>
        </form:FormElement>
      </form:FormContainer>
    </form:Form>
  </Page>
</mvc:View>