Remove backticks and center snippets at the home page (#283)

Author: KapStorm

web/src/main/scala/net/wiringbits/components/pages/HomePage.scala

@@ -36,7 +36,8 @@ import slinky.web.html._
         "snippet" -> CSSProperties()
           .setMaxWidth(800)
           .setWidth("100%")
-          .setMargin("1em 0"),
+          .setDisplay("block")
+          .setMargin("1em auto"),
         "screenshot" -> CSSProperties()
           .setMaxWidth(1200)
           .setWidth("100%")
@@ -110,11 +111,11 @@ import slinky.web.html._
           paragraph(
             Fragment(
               link(texts.tryIt, "https://template-demo-admin.wiringbits.net"),
-              " (user=`",
+              " (user=",
               strong("demo"),
-              "`, password=`",
+              ", password=",
               strong("wiringbits"),
-              "`)"
+              ")"
             )
           )
         )