Enhance accessibility and style adjustments

Added WCAG-compliant scrolling behavior for search wrapper and updated styles for testimonials and team sections. Integrated alt attributes for images to improve accessibility and made minor layout refinements.

docs/stylesheets/extra.scss

@@ -69,6 +69,10 @@
   --md-typeset-a-color: #9d65cf;             // Helleres Violett für Links
 }
 
+.md-search__scrollwrap {
+  tabindex: 0; /* Macht das Element fokussierbar */
+}
+
 ::-moz-selection {
   background: var(--md-primary-fg-color);;
   color: #fff;
@@ -141,6 +145,10 @@ h1,h2,h3{
   background-color: #000;
 }
 
+.md-source-file{
+  display: none;
+}
+
 h1{
   &:after{
 

docs/stylesheets/modules/team.scss

@@ -99,7 +99,7 @@ h1, h2, h3, h4, h5, h6 {
       font-size: 0.7rem;
       font-weight: 400;
       opacity: .9;
-      color: var(--md-typeset-a-color);
+      color: #fff;
       margin-bottom: 0.1rem;
       text-align: left;
       text-transform: uppercase;

docs/stylesheets/modules/testimonials.scss

@@ -138,7 +138,7 @@
 
 .satag--home-testimonial-logo {
   position: absolute;
-  bottom: 10px;
+  bottom: 30px;
   left: 50%;
   transform: translateX(-50%);
   background: transparent;
@@ -152,8 +152,7 @@
   box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
 
   img {
-    max-width: 100px;
-    max-height: 100px;
+    max-width: 60px;
   }
 }