Lock hero headline lines

index.html

@@ -23,7 +23,10 @@
                 alt=""
                 aria-hidden="true"
               />
-              <h1 class="section-title section-title--hero">Von der Idee zur<br />Wirkung</h1>
+              <h1 class="section-title section-title--hero">
+                <span class="hero__line">Von der Idee zur</span>
+                <span class="hero__line">Wirkung</span>
+              </h1>
             </div>
             <button class="button button--dark" type="button" data-open-contact>
               Lass uns starten