Make alerts bigger, add checkmark to "file signed and saved" confirmation.

src/index.html

@@ -237,7 +237,7 @@ file, You can obtain one at http://mozilla.org/MPL/2.0/.
 </div>
 
 <div class="modal fade" id="alertModal" tabindex="-1" aria-labelledby="alertModalLabel" aria-hidden="true">
-    <div class="modal-dialog">
+    <div class="modal-dialog modal-lg">
         <div class="modal-content">
             <div class="modal-body p-1"></div>
             <div class="modal-footer p-1">

src/js/pdf.js

@@ -335,7 +335,7 @@ function savePDF() {
                     statustextEl.html("<i class='fas fa-spin fa-spinner'></i> Signing document...");
                     makeAndSaveSignedPDF(pdf, path, function (result) {
                         statustextEl.html("<i class='fas fa-check'></i> Signed and saved!");
-                        showAlert("File signed and saved.\nSHA256 of file (without signature): " + result.hash);
+                        showAlert("<i class='fas fa-check'></i> File signed and saved. SHA256 of file (excluding appended signature): " + result.hash);
                         setTimeout(function () {
                             statustextEl.html("");
                         }, 5000);