Fix broken menu on sc.data

layouts/custom/sc.data.html

-<link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">
-
 {{ partial "header.html" . }}
 
+<link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">
+
 <div class="header">
     <h1>{{ .Title }}</h1>
     <h2>{{ .Description }}</h2>
@@ -54,7 +54,7 @@
                 <img class="huGenes img" src="/gene.cloud/Genes.hu.202003.png" alt="Human genes searched in March 2020">
             </div>
             <div class="column">
-                <p class="w3-padding-5 w3-black MuGenesName"></p>
+                <p class="w3-padding-5 w3-black muGenesName"></p>
                 <img class="muGenes img" src="/gene.cloud/Genes.mu.202005.png" alt="Mouse genes searched in May 2020">
                 <img class="muGenes img" src="/gene.cloud/Genes.mu.202004.png" alt="Mouse genes searched in April 2020">
                 <img class="muGenes img" src="/gene.cloud/Genes.mu.202003.png" alt="Mouse genes searched in March 2020">