diff --git a/Step/wwwroot/assets/styles/base/input.less b/Step/wwwroot/assets/styles/base/input.less
index ff2e1055..5b76bb3f 100644
--- a/Step/wwwroot/assets/styles/base/input.less
+++ b/Step/wwwroot/assets/styles/base/input.less
@@ -73,5 +73,5 @@ input[aria-invalid="true"]:not([readonly]) {
 }
 
 textarea{
-    font-family: 'Work Sans', sans-serif;    
+    font-family: 'Work Sans', sans-serif;     
 }
diff --git a/Step/wwwroot/assets/styles/base/modals.less b/Step/wwwroot/assets/styles/base/modals.less
index ecab260e..f8a9d60c 100644
--- a/Step/wwwroot/assets/styles/base/modals.less
+++ b/Step/wwwroot/assets/styles/base/modals.less
@@ -730,4 +730,10 @@ sans-serif;
         background-color: @color-clear-blue ;
         color: #fff;
     }
+    iframe{
+        position: absolute; 
+        height: calc(~'100%' - @modal-header-height  + 2px); 
+        width:100%; 
+        border: none;
+    }
 }
\ No newline at end of file
diff --git a/Step/wwwroot/assets/styles/style.css b/Step/wwwroot/assets/styles/style.css
index 942b5981..00c2e347 100644
--- a/Step/wwwroot/assets/styles/style.css
+++ b/Step/wwwroot/assets/styles/style.css
@@ -684,6 +684,12 @@
   background-color: #1791ff;
   color: #fff;
 }
+.modal.modal-iframe iframe {
+  position: absolute;
+  height: calc(100% - 66px);
+  width: 100%;
+  border: none;
+}
 .row {
   display: flex;
   width: 100%;
diff --git a/Step/wwwroot/src/modules/base-components/modal-iframe.vue b/Step/wwwroot/src/modules/base-components/modal-iframe.vue
index 8cdf8bf7..8b98e675 100644
--- a/Step/wwwroot/src/modules/base-components/modal-iframe.vue
+++ b/Step/wwwroot/src/modules/base-components/modal-iframe.vue
@@ -2,7 +2,7 @@
   <modal type="modal-iframe">
     <button class="close" slot="header-buttons" @click="close()"><i class="fa fa-remove"></i></button>
     <!-- <object data="/api/maintenance_manager/attachment/2" type="application/pdf"> -->
-    <iframe style="position: absolute; height: 100%; width:100%; border: none" frameborder="0" :src="content" allowfullscreen></iframe>
+    <iframe id="iframe-attachment" frameborder="0" :src="content" ></iframe>
     <!-- </object> -->
     
   </modal>