diff --git a/Bootstrap.Admin/Views/Admin/Dicts.cshtml b/Bootstrap.Admin/Views/Admin/Dicts.cshtml
index b0ce58bb..d31aabf1 100644
--- a/Bootstrap.Admin/Views/Admin/Dicts.cshtml
+++ b/Bootstrap.Admin/Views/Admin/Dicts.cshtml
@@ -31,7 +31,7 @@
                 </div>
             </div>
             <div class="form-group col-sm-6 col-md-5">
-                <button type="button" id="btn_query" class="btn btn-primary form-control"><i class="fa fa-search" aria-hidden="true"></i><span>查询</span></button>
+                <button type="button" id="btn_query" class="btn btn-primary btn-fill"><i class="fa fa-search" aria-hidden="true"></i><span>查询</span></button>
             </div>
         </div>
     </form>
diff --git a/Bootstrap.Admin/Views/Admin/Exceptions.cshtml b/Bootstrap.Admin/Views/Admin/Exceptions.cshtml
index 420bc226..6d2909dd 100644
--- a/Bootstrap.Admin/Views/Admin/Exceptions.cshtml
+++ b/Bootstrap.Admin/Views/Admin/Exceptions.cshtml
@@ -47,7 +47,7 @@
                 </div>
                 <div class="form-group col-lg-2">
                     <label class="sr-only"></label>
-                    <button type="button" id="btn_query" class="btn btn-primary form-control"><i class="fa fa-search" aria-hidden="true"></i><span>查询</span></button>
+                    <button type="button" id="btn_query" class="btn btn-primary btn-fill"><i class="fa fa-search" aria-hidden="true"></i><span>查询</span></button>
                 </div>
             </div>
         </form>
diff --git a/Bootstrap.Admin/Views/Admin/Groups.cshtml b/Bootstrap.Admin/Views/Admin/Groups.cshtml
index 393e7e3e..0ae737ef 100644
--- a/Bootstrap.Admin/Views/Admin/Groups.cshtml
+++ b/Bootstrap.Admin/Views/Admin/Groups.cshtml
@@ -18,7 +18,7 @@
                 <input type="text" class="form-control" id="txt_group_desc" />
             </div>
             <div class="form-group col-sm-12 col-md-2">
-                <button type="button" id="btn_query" class="btn btn-primary form-control"><i class="fa fa-search" aria-hidden="true"></i><span>查询</span></button>
+                <button type="button" id="btn_query" class="btn btn-primary btn-fill"><i class="fa fa-search" aria-hidden="true"></i><span>查询</span></button>
             </div>
         </div>
     </form>
diff --git a/Bootstrap.Admin/Views/Admin/Logs.cshtml b/Bootstrap.Admin/Views/Admin/Logs.cshtml
index 357917c1..875caeb6 100644
--- a/Bootstrap.Admin/Views/Admin/Logs.cshtml
+++ b/Bootstrap.Admin/Views/Admin/Logs.cshtml
@@ -62,7 +62,7 @@
                     </div>
                 </div>
                 <div class="form-group col-lg-2">
-                    <button type="button" id="btn_query" class="btn btn-primary form-control"><i class="fa fa-search" aria-hidden="true"></i><span>查询</span></button>
+                    <button type="button" id="btn_query" class="btn btn-primary btn-fill"><i class="fa fa-search" aria-hidden="true"></i><span>查询</span></button>
                 </div>
             </div>
         </form>
diff --git a/Bootstrap.Admin/Views/Admin/Menus.cshtml b/Bootstrap.Admin/Views/Admin/Menus.cshtml
index f442fbdd..bcca8ba9 100644
--- a/Bootstrap.Admin/Views/Admin/Menus.cshtml
+++ b/Bootstrap.Admin/Views/Admin/Menus.cshtml
@@ -47,7 +47,7 @@
                 </div>
             </div>
             <div class="form-group col-lg-2">
-                <button type="button" id="btn_query" class="btn btn-primary form-control"><i class="fa fa-search" aria-hidden="true"></i><span>查询</span></button>
+                <button type="button" id="btn_query" class="btn btn-primary btn-fill"><i class="fa fa-search" aria-hidden="true"></i><span>查询</span></button>
             </div>
         </div>
     </form>
diff --git a/Bootstrap.Admin/Views/Admin/Roles.cshtml b/Bootstrap.Admin/Views/Admin/Roles.cshtml
index 76ed1ae8..48259b8c 100644
--- a/Bootstrap.Admin/Views/Admin/Roles.cshtml
+++ b/Bootstrap.Admin/Views/Admin/Roles.cshtml
@@ -24,7 +24,7 @@
                 <input type="text" class="form-control" id="txt_role_desc" />
             </div>
             <div class="form-group col-sm-12 col-md-2">
-                <button type="button" id="btn_query" class="btn btn-primary form-control"><i class="fa fa-search" aria-hidden="true"></i><span>查询</span></button>
+                <button type="button" id="btn_query" class="btn btn-primary btn-fill"><i class="fa fa-search" aria-hidden="true"></i><span>查询</span></button>
             </div>
         </div>
     </form>
diff --git a/Bootstrap.Admin/Views/Admin/Users.cshtml b/Bootstrap.Admin/Views/Admin/Users.cshtml
index 4aa492c2..71a41c8b 100644
--- a/Bootstrap.Admin/Views/Admin/Users.cshtml
+++ b/Bootstrap.Admin/Views/Admin/Users.cshtml
@@ -18,7 +18,7 @@
                 <input type="text" class="form-control" id="txt_display_name" />
             </div>
             <div class="form-group col-sm-12 col-md-2">
-                <button type="button" id="btn_query" class="btn btn-primary form-control"><i class="fa fa-search" aria-hidden="true"></i><span>查询</span></button>
+                <button type="button" id="btn_query" class="btn btn-primary btn-fill"><i class="fa fa-search" aria-hidden="true"></i><span>查询</span></button>
             </div>
         </div>
     </form>
diff --git a/Bootstrap.Admin/wwwroot/css/theme-responsive.css b/Bootstrap.Admin/wwwroot/css/theme-responsive.css
index 21815eb8..d7bd3672 100644
--- a/Bootstrap.Admin/wwwroot/css/theme-responsive.css
+++ b/Bootstrap.Admin/wwwroot/css/theme-responsive.css
@@ -21,6 +21,10 @@
     .modal-lg {
         max-width: calc(90%);
     }
+
+    .btn-fill {
+        width: auto;
+    }
 }
 
 @media (min-width: 940px) {
diff --git a/Bootstrap.Admin/wwwroot/css/theme.css b/Bootstrap.Admin/wwwroot/css/theme.css
index b8b781de..6c02f452 100644
--- a/Bootstrap.Admin/wwwroot/css/theme.css
+++ b/Bootstrap.Admin/wwwroot/css/theme.css
@@ -8,6 +8,10 @@
         box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(102,175,233,.6);
     }
 
+.btn-fill {
+    width: 100%;
+}
+
 .tooltip-inner {
     max-width: 768px;
 }