diff --git a/theme/base/style/modal.css b/theme/base/style/modal.css
deleted file mode 100644
index d3fd7800551..00000000000
--- a/theme/base/style/modal.css
+++ /dev/null
@@ -1,141 +0,0 @@
-body.modal-open {
-    overflow: hidden;
-}
-
-.modal-container {
-    position: fixed;
-    top: 0;
-    right: 0;
-    bottom: 0;
-    left: 0;
-    z-index: 4050;
-    outline: 0;
-    overflow-x: hidden;
-    overflow-y: auto;
-}
-
-.modal-container.large .modal {
-    max-width: 900px;
-}
-
-.modal-container .modal {
-    position: relative;
-    margin: 50px auto 30px;
-    top: auto;
-    right: auto;
-    bottom: auto;
-    left: auto;
-    width: auto;
-    max-width: 560px;
-    box-shadow: 5px 5px 20px 0 #666;
-    -webkit-box-shadow: 5px 5px 20px 0 #666;
-    -moz-box-shadow: 5px 5px 20px 0 #666;
-    border-radius: 10px;
-    -webkit-border-radius: 10px;
-    -moz-border-radius: 10px;
-    border: none;
-    background-color: #fff;
-    background-clip: padding-box;
-    outline: none;
-}
-
-.modal-container .modal .modal-header {
-    min-height: 13px;
-    padding: 5px;
-    font-size: 12px;
-    font-weight: normal;
-    letter-spacing: 1px;
-    color: #333;
-    text-align: center;
-    text-shadow: 1px 1px 1px #fff;
-    border-bottom: 1px solid #bbb;
-    background: #ccc;
-    background-color: #ebebeb;
-    background-image:
-        linear-gradient(to bottom, #fff, #ccc),
-        -webkit-gradient(linear, 0 0, 0 100%, from(#fff), to(#ccc));
-    background-repeat: repeat-x;
-    border-radius: 10px 10px 0 0;
-    -webkit-border-radius: 10px 10px 0 0;
-    -moz-border-radius: 10px 10px 0 0;
-    position: relative;
-}
-
-.modal-container .modal .modal-header h3 {
-    font-size: 12px;
-    font-weight: normal;
-    letter-spacing: 1px;
-    line-height: 20px;
-    margin: 0;
-}
-
-.modal-container .modal .modal-header .close {
-    position: absolute;
-    top: 5px;
-    right: 5px;
-    width: 25px;
-    height: 15px;
-    line-height: 15px;
-    font-size: 15px;
-    margin: 0;
-    opacity: 1;
-    background-image: url([[pix:theme|sprite]]);
-    background-repeat: no-repeat;
-    border-style: none;
-    border-radius: 4px;
-    -webkit-border-radius: 4px;
-    -moz-border-radius: 4px;
-    box-shadow:
-        0 0 0 1px rgba(0, 0, 0, 0.25) inset,
-        0 2px 0 rgba(255, 255, 255, 0.30) inset,
-        0 1px 2px rgba(0, 0, 0, 0.15);
-    -webkit-box-shadow:
-        0 0 0 1px rgba(0, 0, 0, 0.25) inset,
-        0 2px 0 rgba(255, 255, 255, 0.30) inset,
-        0 1px 2px rgba(0, 0, 0, 0.15);
-    -moz-box-shadow:
-        0 0 0 1px rgba(0, 0, 0, 0.25) inset,
-        0 2px 0 rgba(255, 255, 255, 0.30) inset,
-        0 1px 2px rgba(0, 0, 0, 0.15);
-}
-
-.modal-container .modal .modal-header .close:hover,
-.modal-container .modal .modal-header .close:active,
-.modal-container .modal .modal-header .close:focus {
-    background-position: 0 0;
-}
-
-.modal-container .modal .modal-body {
-    max-height: none;
-    position: relative;
-    padding: 15px;
-}
-
-.modal-container .modal .modal-footer {
-    border-top: 1px solid #bbb;
-    text-align: center;
-    padding: .7em 0;
-    background-color: #f2f2f2;
-    box-shadow: none;
-    -webkit-box-shadow: none;
-    -moz-box-shadow: none;
-    border-radius: 0 0 10px 10px;
-    -webkit-border-radius: 0 0 10px 10px;
-    -moz-border-radius: 0 0 10px 10px;
-}
-
-.modal-backdrop {
-    z-index: 4049;
-    background-color: #aaa;
-    position: fixed;
-    top: 0;
-    right: 0;
-    bottom: 0;
-    left: 0;
-    opacity: 0.4;
-}
-
-.dir-rtl .modal-container .modal .modal-header .close {
-    left: 5px;
-    right: auto;
-}