feat: Adds thermal balance point, still need to implement economic balance point.

Sources/Styleguide/WarningBox.swift

@@ -26,7 +26,7 @@ public struct WarningBox<Header: HTML>: HTML, Sendable {
     div(.id("warnings")) {
       if warnings.count > 0 {
         header(warnings)
-        ul(.class("list-disc mx-10")) {
+        ul(.class("list-disc mx-10 mt-4")) {
           for warning in warnings {
             li { warning }
           }
@@ -52,7 +52,7 @@ public extension WarningBox where Header == HTMLElement<HTMLTag.span, HTMLText>
     self.init(
       warnings: warnings,
       header: { warnings in
-        span(.class("font-semibold mb-4 border-b")) { "Warning\(warnings.count > 1 ? "s:" : ":")" }
+        span(.class("font-semibold mb-4 border-b border-amber-500")) { "Warning\(warnings.count > 1 ? "s:" : ":")" }
       }
     )
   }