diff --git a/views/auditorio.php b/views/auditorio.php
index fccfc2e..1886306 100644
--- a/views/auditorio.php
+++ b/views/auditorio.php
@@ -33,9 +33,22 @@
     position: absolute !important;
     right: 0px !important;
  }
+ .modal.custom .modal-dialog {
+    width:25%;
+    position:fixed;
+    bottom:0;
+    right:0;
+    margin:0;
+}
+
+.modal {
+  height: unset !important;
+  right: unset !important;
+  bottom: unset !important;
+}
 </style>
 
-<div class="modal fade left-zero" id="modal_chat" tabindex="-1" role="dialog" aria-hidden="true">
+<div class="modal custom fade left-zero" id="modal_chat" tabindex="-1" role="dialog">
     <div class="modal-dialog">
         <div class="modal-content">
             <div class="modal-header">