diff --git a/assets/css/browser-solidity.css b/assets/css/browser-solidity.css
index ad2b08a2d5..16f4cef9ed 100644
--- a/assets/css/browser-solidity.css
+++ b/assets/css/browser-solidity.css
@@ -306,77 +306,3 @@ input[type="file"] {
 .ace_gutter-cell.ace_breakpoint{
     background-color: hsla(0, 82%, 82%, 1); /* red in style-guide.js */
 }
-
-/* The Modal (background) */
-.modal {
-    display: none; /* Hidden by default */
-    position: fixed; /* Stay in place */
-    z-index: 6; /* Sit on top */
-    left: 0;
-    top: 0;
-    width: 100%; /* Full width */
-    height: 100%; /* Full height */
-    overflow: auto; /* Enable scroll if needed */
-    background-color: hsla(0, 0%, 0%, 1); /* Fallback color */
-    background-color: hsla(0, 0%, 0%, .4); /* Black w/ opacity */
-}
-
-/* Modal Header */
-.modal-header {
-    padding: 2px 16px;
-    background-color: hsla(59, 56%, 78%, 0.5);
-    border-top-right-radius: 3px;
-    border-top-left-radius: 3px;
-    color: white;
-    display: flex;
-    align-items: baseline;
-    justify-content: space-between;
-}
-
-/* Modal Body */
-.modal-body {padding: 2px 16px;}
-
-/* Modal Footer */
-.modal-footer {
-    padding: 2px 16px;
-    background-color: hsla(59, 56%, 78%, 0.5);
-    color: black;
-    display: flex;
-    justify-content: flex-end;
-}
-
-/* Modal Content */
-.modal-content {
-    position: relative;
-    background-color: hsl(0, 0%, 100%); /* white in style-guide.js */
-    margin: auto;
-    padding: 0;
-    border-top-right-radius: 3px;
-    border-top-left-radius: 3px;
-    width: 50%;
-    box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2),0 6px 20px 0 rgba(0,0,0,0.19);
-    -webkit-animation-name: animatetop;
-    -webkit-animation-duration: 0.4s;
-    animation-name: animatetop;
-    animation-duration: 0.4s;
-}
-
-#modal-footer-cancel {
-    margin-left: 1em;
-    cursor: pointer;
-}
-
-#modal-footer-ok {
-    cursor: pointer;
-}
-
-/* Add Animation */
-@-webkit-keyframes animatetop {
-    from {top: -300px; opacity: 0}
-    to {top: 0; opacity: 1}
-}
-
-@keyframes animatetop {
-    from {top: -300px; opacity: 0}
-    to {top: 0; opacity: 1}
-}