diff --git a/docs/structure/emitters.md b/docs/structure/emitters.md
index 39443d22..d8317014 100644
--- a/docs/structure/emitters.md
+++ b/docs/structure/emitters.md
@@ -309,12 +309,8 @@ An example of the `MultiChannelLightEmitter` illustrates well how the definition
   <Header/>  
   <GeneralDefinitions>
     <Files>
-      <File id="photometryRedFile" contentType="ldc/eulumdat" 
+      <File id="photometryFile" contentType="ldc/eulumdat" 
             type="url">http://example.org/photometryRed.ldt</File>
-      <File id="photometryGreenFile" contentType="ldc/eulumdat" 
-            type="url">http://example.org/photometryGreen.ldt</File>
-      <File id="photometryBlueFile" contentType="ldc/eulumdat" 
-            type="url">http://example.org/photometryBlue.ldt</File>
       <File id="spectrumRedFile" contentType="spectrum/text" 
             type="url">http://example.org/spectrumRed.txt</File>
       <File id="spectrumGreenFile" contentType="spectrum/text" 
@@ -325,14 +321,8 @@ An example of the `MultiChannelLightEmitter` illustrates well how the definition
             type="url">http://example.org/image.jpg</File>
     </Files>
     <Photometries>
-      <Photometry id="photometryRed">
-        <PhotometryFileReference fileId="photometryRedFile"/>
-      </Photometry>
-      <Photometry id="photometryGreen">
-        <PhotometryFileReference fileId="photometryGreenFile"/>
-      </Photometry>
-      <Photometry id="photometryBlue">
-        <PhotometryFileReference fileId="photometryBlueFile"/>
+      <Photometry id="photometry">
+        <PhotometryFileReference fileId="photometryFile"/>
       </Photometry>
     </Photometries>
     <Spectrums>
@@ -361,7 +351,7 @@ An example of the `MultiChannelLightEmitter` illustrates well how the definition
               <Locale language="en">Red</Locale>
             </DisplayName>
             <SpectrumReference spectrumId="spectrumRed"/>
-            <PhotometryReference photometryId="photometryRed"/>
+            <PhotometryReference photometryId="photometry"/>
             <RatedLuminousFlux>150</RatedLuminousFlux>
           </Channel>
           <Channel type="Green">
@@ -369,7 +359,7 @@ An example of the `MultiChannelLightEmitter` illustrates well how the definition
               <Locale language="en">Green</Locale>
             </DisplayName>
             <SpectrumReference spectrumId="spectrumGreen"/>
-            <PhotometryReference photometryId="photometryGreen"/>
+            <PhotometryReference photometryId="photometry"/>
             <RatedLuminousFlux>150</RatedLuminousFlux>
           </Channel>
           <Channel type="Blue">
@@ -377,7 +367,7 @@ An example of the `MultiChannelLightEmitter` illustrates well how the definition
               <Locale language="en">Blue</Locale>
             </DisplayName>
             <SpectrumReference spectrumId="spectrumBlue"/>
-            <PhotometryReference photometryId="photometryBlue"/>
+            <PhotometryReference photometryId="photometry"/>
             <RatedLuminousFlux>150</RatedLuminousFlux>
           </Channel>
         </Channels>
diff --git a/src/pages/imprint.js b/src/pages/imprint.js
index e2c5abaa..b4a789e3 100644
--- a/src/pages/imprint.js
+++ b/src/pages/imprint.js
@@ -26,103 +26,87 @@ function Imprints() {
       <TwoColumns
         columnOne={
           <>
-            <h2 class="ImprintCompanyName">DIAL GmbH</h2>
+            <h2 className="ImprintCompanyName">DIAL GmbH</h2>
             <p>
-              <div>
-                <strong>Chief Executive Officer</strong>
-              </div>
-              <div>Dipl.-Ing. Dieter Polle</div>
+              <strong>Chief Executive Officer</strong>
+              <br />
+              Dipl.-Ing. Dieter Polle
             </p>
             <p>
-              <div>
-                <strong>Court of jurisdiction – commercial register</strong>
-              </div>
-              <div>Iserlohn</div>
+              <strong>Court of jurisdiction – commercial register</strong>
+              <br />
+              Iserlohn
             </p>
             <p>
-              <div>
-                <strong>No. in commercial register</strong>
-              </div>
-              <div>HRB 4446</div>
+              <strong>No. in commercial register</strong>
+              <br />
+              HRB 4446
             </p>
             <p>
-              <div>
-                <strong>VAT ID</strong>
-              </div>
-              <div>DE 125807143</div>
+              <strong>VAT ID</strong>
+              <br />
+              DE 125807143
             </p>
             <p>
-              <div>
-                <strong>Responsible for the content</strong>
-              </div>
-              <div>Dipl.-Ing. Dieter Polle</div>
+              <strong>Responsible for the content</strong>
+              <br />
+              Dipl.-Ing. Dieter Polle
             </p>
             <p>
-              <div>
-                <strong>Contact</strong>
-              </div>
-              <div>
-                DIAL GmbH
-                <br />
-                Bahnhofsallee 18
-                <br />
-                D-58507 Lüdenscheid
-                <br />
-                Fon: +49 23 51 56 74 0
-                <br />
-                Mail: dialog@dial.de
-              </div>
+              <strong>Contact</strong>
+              <br />
+              DIAL GmbH
+              <br />
+              Bahnhofsallee 18
+              <br />
+              D-58507 Lüdenscheid
+              <br />
+              Fon: +49 23 51 56 74 0
+              <br />
+              Mail: dialog@dial.de
             </p>
           </>
         }
         columnTwo={
           <>
-            <h2 class="ImprintCompanyName">RELUX Informatik AG</h2>
+            <h2 className="ImprintCompanyName">RELUX Informatik AG</h2>
             <p>
-              <div>
-                <strong>Chief Executive Officer</strong>
-              </div>
-              <div>Dipl.-Ing. Markus Hegi</div>
+              <strong>Chief Executive Officer</strong>
+              <br />
+              Dipl.-Ing. Markus Hegi
             </p>
             <p>
-              <div>
-                <strong>Court of jurisdiction – commercial register</strong>
-              </div>
-              <div>Basel</div>
+              <strong>Court of jurisdiction – commercial register</strong>
+              <br />
+              Basel
             </p>
             <p>
-              <div>
-                <strong>No. in commercial register</strong>
-              </div>
-              <div>CHE-104.196.664</div>
+              <strong>No. in commercial register</strong>
+              <br />
+              CHE-104.196.664
             </p>
             <p>
-              <div>
-                <strong>VAT ID</strong>
-              </div>
-              <div>CHE-104.196.664 TVA</div>
+              <strong>VAT ID</strong>
+              <br />
+              CHE-104.196.664 TVA
             </p>
             <p>
-              <div>
-                <strong>Responsible for the content</strong>
-              </div>
-              <div>Dipl.-Ing. Robert Heinze</div>
+              <strong>Responsible for the content</strong>
+              <br />
+              Dipl.-Ing. Robert Heinze
             </p>
             <p>
-              <div>
-                <strong>Contact</strong>
-              </div>
-              <div>
-                RELUX Informatik AG
-                <br />
-                Kaspar Pfeiffer Strasse 4
-                <br />
-                CH-4142 Münchenstein
-                <br />
-                Fon: +41 61 333 07 70
-                <br />
-                Mail: info@relux.com
-              </div>
+              <strong>Contact</strong>
+              <br />
+              RELUX Informatik AG
+              <br />
+              Kaspar Pfeiffer Strasse 4
+              <br />
+              CH-4142 Münchenstein
+              <br />
+              Fon: +41 61 333 07 70
+              <br />
+              Mail: info@relux.com
             </p>
           </>
         }
@@ -132,7 +116,8 @@ function Imprints() {
         <p>
           Responsible for the journalistic and editorial content of the blog section (gldf.io/blog/)
           in accordance with Section 18 (2) of the German State Media Treaty (Medienstaatsvertrag, MStV):<br />
-          <strong>Dieter Polle</strong>, Managing Director of DIAL GmbH,<br />Bahnhofsallee 18, 58507 Lüdenscheid, Germany.
+          <strong>Dieter Polle</strong>, Managing Director of DIAL GmbH,<br />
+          Bahnhofsallee 18, 58507 Lüdenscheid, Germany.
         </p>
         <br />
         <br />