Fix accessibility issues in SDK javadoc: (#3823)

* Fix accessibility issues in SDK javadoc:
- make links hover color have more contrast
- prevent the need to scroll horizontally on small width

javadoc-resources/aws-sdk-java-v2-javadoc.css

@@ -13,6 +13,67 @@
  * permissions and limitations under the License.
  */
 
+/*
+Accessibility: This css file modify the basic javadoc css to
+conform to accessibility audit issues.
+ */
+
+/* make links have more contrast and not rely only on color */
 a:link {
     font-weight: bold;
 }
+
+a[href]:hover, a[href]:focus {
+    color: #a85e1e;
+}
+
+.top-nav a[href]:hover, a[href]:focus {
+    color: white;
+    text-decoration: underline;
+}
+
+/* ensure no horizontal scrolling is needed with small horizontal width */
+@media (max-width: 800px) {
+    pre, code {
+        word-break: break-all;
+        word-wrap: break-word;
+        white-space: break-spaces;
+    }
+
+    .parameters {
+        white-space: break-spaces !important;
+    }
+
+    .sub-title {
+        word-break: break-all;
+    }
+
+    .member-signature {
+        word-break: break-all;
+    }
+
+    .block {
+        word-wrap: break-word;
+    }
+
+    .exceptions {
+        white-space: break-spaces !important;
+    }
+
+    .type-signature {
+        word-wrap: break-word;
+    }
+
+    .inherited-list {
+        word-wrap: break-word;
+    }
+
+    .details {
+        word-wrap: break-word;
+    }
+}
+
+/* fixes footer weird behavior */
+footer {
+    margin-left: 2vw;
+}