diff --git a/css/data-explorer.css b/css/data-explorer.css
index 79cc7689..2705d14a 100644
--- a/css/data-explorer.css
+++ b/css/data-explorer.css
@@ -9,6 +9,7 @@
 .data-explorer .header .navigation {
   float: left;
   margin-left: 0;
+  padding-left: 0;
 }
 
 .header .pagination {
@@ -34,6 +35,47 @@
   clear: both;
 }
 
+/* bootstrap btn */
+.btn {
+  cursor: pointer;
+  display: inline-block;
+  background-color: #e6e6e6;
+  background-repeat: no-repeat;
+  background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#ffffff), color-stop(25%, #ffffff), to(#e6e6e6));
+  background-image: -webkit-linear-gradient(#ffffff, #ffffff 25%, #e6e6e6);
+  background-image: -moz-linear-gradient(top, #ffffff, #ffffff 25%, #e6e6e6);
+  background-image: -ms-linear-gradient(#ffffff, #ffffff 25%, #e6e6e6);
+  background-image: -o-linear-gradient(#ffffff, #ffffff 25%, #e6e6e6);
+  background-image: linear-gradient(#ffffff, #ffffff 25%, #e6e6e6);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffff', endColorstr='#e6e6e6', GradientType=0);
+  padding: 5px 14px 6px;
+  text-shadow: 0 1px 1px rgba(255, 255, 255, 0.75);
+  color: #333;
+  font-size: 13px;
+  line-height: normal;
+  border: 1px solid #ccc;
+  border-bottom-color: #bbb;
+  -webkit-border-radius: 4px;
+  -moz-border-radius: 4px;
+  border-radius: 4px;
+  -webkit-box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
+  -moz-box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
+  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
+  -webkit-transition: 0.1s linear all;
+  -moz-transition: 0.1s linear all;
+  -ms-transition: 0.1s linear all;
+  -o-transition: 0.1s linear all;
+  transition: 0.1s linear all;
+}
+.btn:hover {
+  background-position: 0 -15px;
+  color: #333;
+  text-decoration: none;
+}
+.btn:focus {
+  outline: 1px dotted #666;
+}
+
 /* twitter btn.disabled but for button link that is active. used in navigation */
 .active .btn {
   cursor: default;