Add PureCSS v1.0.0 + menu layout.

from https://unpkg.com/purecss@1.0.0/build/
  * PureCSS base
  * grids

from https://purecss.io/css/layouts/side-menu.css
  * side-menu layout

static/purecss/LICENSE.md

@@ -0,0 +1,29 @@
+Software License Agreement (BSD License)
+========================================
+
+Copyright 2013 Yahoo! Inc.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+
+    * Neither the name of the Yahoo! Inc. nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL YAHOO! INC. BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

static/purecss/grids-responsive.css

@@ -0,0 +1,861 @@
+/*!
+Pure v1.0.0
+Copyright 2013 Yahoo!
+Licensed under the BSD License.
+https://github.com/yahoo/pure/blob/master/LICENSE.md
+*/
+@media screen and (min-width: 35.5em) {
+    .pure-u-sm-1,
+    .pure-u-sm-1-1,
+    .pure-u-sm-1-2,
+    .pure-u-sm-1-3,
+    .pure-u-sm-2-3,
+    .pure-u-sm-1-4,
+    .pure-u-sm-3-4,
+    .pure-u-sm-1-5,
+    .pure-u-sm-2-5,
+    .pure-u-sm-3-5,
+    .pure-u-sm-4-5,
+    .pure-u-sm-5-5,
+    .pure-u-sm-1-6,
+    .pure-u-sm-5-6,
+    .pure-u-sm-1-8,
+    .pure-u-sm-3-8,
+    .pure-u-sm-5-8,
+    .pure-u-sm-7-8,
+    .pure-u-sm-1-12,
+    .pure-u-sm-5-12,
+    .pure-u-sm-7-12,
+    .pure-u-sm-11-12,
+    .pure-u-sm-1-24,
+    .pure-u-sm-2-24,
+    .pure-u-sm-3-24,
+    .pure-u-sm-4-24,
+    .pure-u-sm-5-24,
+    .pure-u-sm-6-24,
+    .pure-u-sm-7-24,
+    .pure-u-sm-8-24,
+    .pure-u-sm-9-24,
+    .pure-u-sm-10-24,
+    .pure-u-sm-11-24,
+    .pure-u-sm-12-24,
+    .pure-u-sm-13-24,
+    .pure-u-sm-14-24,
+    .pure-u-sm-15-24,
+    .pure-u-sm-16-24,
+    .pure-u-sm-17-24,
+    .pure-u-sm-18-24,
+    .pure-u-sm-19-24,
+    .pure-u-sm-20-24,
+    .pure-u-sm-21-24,
+    .pure-u-sm-22-24,
+    .pure-u-sm-23-24,
+    .pure-u-sm-24-24 {
+        display: inline-block;
+        *display: inline;
+        zoom: 1;
+        letter-spacing: normal;
+        word-spacing: normal;
+        vertical-align: top;
+        text-rendering: auto;
+    }
+
+    .pure-u-sm-1-24 {
+        width: 4.1667%;
+        *width: 4.1357%;
+    }
+
+    .pure-u-sm-1-12,
+    .pure-u-sm-2-24 {
+        width: 8.3333%;
+        *width: 8.3023%;
+    }
+
+    .pure-u-sm-1-8,
+    .pure-u-sm-3-24 {
+        width: 12.5000%;
+        *width: 12.4690%;
+    }
+
+    .pure-u-sm-1-6,
+    .pure-u-sm-4-24 {
+        width: 16.6667%;
+        *width: 16.6357%;
+    }
+
+    .pure-u-sm-1-5 {
+        width: 20%;
+        *width: 19.9690%;
+    }
+
+    .pure-u-sm-5-24 {
+        width: 20.8333%;
+        *width: 20.8023%;
+    }
+
+    .pure-u-sm-1-4,
+    .pure-u-sm-6-24 {
+        width: 25%;
+        *width: 24.9690%;
+    }
+
+    .pure-u-sm-7-24 {
+        width: 29.1667%;
+        *width: 29.1357%;
+    }
+
+    .pure-u-sm-1-3,
+    .pure-u-sm-8-24 {
+        width: 33.3333%;
+        *width: 33.3023%;
+    }
+
+    .pure-u-sm-3-8,
+    .pure-u-sm-9-24 {
+        width: 37.5000%;
+        *width: 37.4690%;
+    }
+
+    .pure-u-sm-2-5 {
+        width: 40%;
+        *width: 39.9690%;
+    }
+
+    .pure-u-sm-5-12,
+    .pure-u-sm-10-24 {
+        width: 41.6667%;
+        *width: 41.6357%;
+    }
+
+    .pure-u-sm-11-24 {
+        width: 45.8333%;
+        *width: 45.8023%;
+    }
+
+    .pure-u-sm-1-2,
+    .pure-u-sm-12-24 {
+        width: 50%;
+        *width: 49.9690%;
+    }
+
+    .pure-u-sm-13-24 {
+        width: 54.1667%;
+        *width: 54.1357%;
+    }
+
+    .pure-u-sm-7-12,
+    .pure-u-sm-14-24 {
+        width: 58.3333%;
+        *width: 58.3023%;
+    }
+
+    .pure-u-sm-3-5 {
+        width: 60%;
+        *width: 59.9690%;
+    }
+
+    .pure-u-sm-5-8,
+    .pure-u-sm-15-24 {
+        width: 62.5000%;
+        *width: 62.4690%;
+    }
+
+    .pure-u-sm-2-3,
+    .pure-u-sm-16-24 {
+        width: 66.6667%;
+        *width: 66.6357%;
+    }
+
+    .pure-u-sm-17-24 {
+        width: 70.8333%;
+        *width: 70.8023%;
+    }
+
+    .pure-u-sm-3-4,
+    .pure-u-sm-18-24 {
+        width: 75%;
+        *width: 74.9690%;
+    }
+
+    .pure-u-sm-19-24 {
+        width: 79.1667%;
+        *width: 79.1357%;
+    }
+
+    .pure-u-sm-4-5 {
+        width: 80%;
+        *width: 79.9690%;
+    }
+
+    .pure-u-sm-5-6,
+    .pure-u-sm-20-24 {
+        width: 83.3333%;
+        *width: 83.3023%;
+    }
+
+    .pure-u-sm-7-8,
+    .pure-u-sm-21-24 {
+        width: 87.5000%;
+        *width: 87.4690%;
+    }
+
+    .pure-u-sm-11-12,
+    .pure-u-sm-22-24 {
+        width: 91.6667%;
+        *width: 91.6357%;
+    }
+
+    .pure-u-sm-23-24 {
+        width: 95.8333%;
+        *width: 95.8023%;
+    }
+
+    .pure-u-sm-1,
+    .pure-u-sm-1-1,
+    .pure-u-sm-5-5,
+    .pure-u-sm-24-24 {
+        width: 100%;
+    }
+}
+
+@media screen and (min-width: 48em) {
+    .pure-u-md-1,
+    .pure-u-md-1-1,
+    .pure-u-md-1-2,
+    .pure-u-md-1-3,
+    .pure-u-md-2-3,
+    .pure-u-md-1-4,
+    .pure-u-md-3-4,
+    .pure-u-md-1-5,
+    .pure-u-md-2-5,
+    .pure-u-md-3-5,
+    .pure-u-md-4-5,
+    .pure-u-md-5-5,
+    .pure-u-md-1-6,
+    .pure-u-md-5-6,
+    .pure-u-md-1-8,
+    .pure-u-md-3-8,
+    .pure-u-md-5-8,
+    .pure-u-md-7-8,
+    .pure-u-md-1-12,
+    .pure-u-md-5-12,
+    .pure-u-md-7-12,
+    .pure-u-md-11-12,
+    .pure-u-md-1-24,
+    .pure-u-md-2-24,
+    .pure-u-md-3-24,
+    .pure-u-md-4-24,
+    .pure-u-md-5-24,
+    .pure-u-md-6-24,
+    .pure-u-md-7-24,
+    .pure-u-md-8-24,
+    .pure-u-md-9-24,
+    .pure-u-md-10-24,
+    .pure-u-md-11-24,
+    .pure-u-md-12-24,
+    .pure-u-md-13-24,
+    .pure-u-md-14-24,
+    .pure-u-md-15-24,
+    .pure-u-md-16-24,
+    .pure-u-md-17-24,
+    .pure-u-md-18-24,
+    .pure-u-md-19-24,
+    .pure-u-md-20-24,
+    .pure-u-md-21-24,
+    .pure-u-md-22-24,
+    .pure-u-md-23-24,
+    .pure-u-md-24-24 {
+        display: inline-block;
+        *display: inline;
+        zoom: 1;
+        letter-spacing: normal;
+        word-spacing: normal;
+        vertical-align: top;
+        text-rendering: auto;
+    }
+
+    .pure-u-md-1-24 {
+        width: 4.1667%;
+        *width: 4.1357%;
+    }
+
+    .pure-u-md-1-12,
+    .pure-u-md-2-24 {
+        width: 8.3333%;
+        *width: 8.3023%;
+    }
+
+    .pure-u-md-1-8,
+    .pure-u-md-3-24 {
+        width: 12.5000%;
+        *width: 12.4690%;
+    }
+
+    .pure-u-md-1-6,
+    .pure-u-md-4-24 {
+        width: 16.6667%;
+        *width: 16.6357%;
+    }
+
+    .pure-u-md-1-5 {
+        width: 20%;
+        *width: 19.9690%;
+    }
+
+    .pure-u-md-5-24 {
+        width: 20.8333%;
+        *width: 20.8023%;
+    }
+
+    .pure-u-md-1-4,
+    .pure-u-md-6-24 {
+        width: 25%;
+        *width: 24.9690%;
+    }
+
+    .pure-u-md-7-24 {
+        width: 29.1667%;
+        *width: 29.1357%;
+    }
+
+    .pure-u-md-1-3,
+    .pure-u-md-8-24 {
+        width: 33.3333%;
+        *width: 33.3023%;
+    }
+
+    .pure-u-md-3-8,
+    .pure-u-md-9-24 {
+        width: 37.5000%;
+        *width: 37.4690%;
+    }
+
+    .pure-u-md-2-5 {
+        width: 40%;
+        *width: 39.9690%;
+    }
+
+    .pure-u-md-5-12,
+    .pure-u-md-10-24 {
+        width: 41.6667%;
+        *width: 41.6357%;
+    }
+
+    .pure-u-md-11-24 {
+        width: 45.8333%;
+        *width: 45.8023%;
+    }
+
+    .pure-u-md-1-2,
+    .pure-u-md-12-24 {
+        width: 50%;
+        *width: 49.9690%;
+    }
+
+    .pure-u-md-13-24 {
+        width: 54.1667%;
+        *width: 54.1357%;
+    }
+
+    .pure-u-md-7-12,
+    .pure-u-md-14-24 {
+        width: 58.3333%;
+        *width: 58.3023%;
+    }
+
+    .pure-u-md-3-5 {
+        width: 60%;
+        *width: 59.9690%;
+    }
+
+    .pure-u-md-5-8,
+    .pure-u-md-15-24 {
+        width: 62.5000%;
+        *width: 62.4690%;
+    }
+
+    .pure-u-md-2-3,
+    .pure-u-md-16-24 {
+        width: 66.6667%;
+        *width: 66.6357%;
+    }
+
+    .pure-u-md-17-24 {
+        width: 70.8333%;
+        *width: 70.8023%;
+    }
+
+    .pure-u-md-3-4,
+    .pure-u-md-18-24 {
+        width: 75%;
+        *width: 74.9690%;
+    }
+
+    .pure-u-md-19-24 {
+        width: 79.1667%;
+        *width: 79.1357%;
+    }
+
+    .pure-u-md-4-5 {
+        width: 80%;
+        *width: 79.9690%;
+    }
+
+    .pure-u-md-5-6,
+    .pure-u-md-20-24 {
+        width: 83.3333%;
+        *width: 83.3023%;
+    }
+
+    .pure-u-md-7-8,
+    .pure-u-md-21-24 {
+        width: 87.5000%;
+        *width: 87.4690%;
+    }
+
+    .pure-u-md-11-12,
+    .pure-u-md-22-24 {
+        width: 91.6667%;
+        *width: 91.6357%;
+    }
+
+    .pure-u-md-23-24 {
+        width: 95.8333%;
+        *width: 95.8023%;
+    }
+
+    .pure-u-md-1,
+    .pure-u-md-1-1,
+    .pure-u-md-5-5,
+    .pure-u-md-24-24 {
+        width: 100%;
+    }
+}
+
+@media screen and (min-width: 64em) {
+    .pure-u-lg-1,
+    .pure-u-lg-1-1,
+    .pure-u-lg-1-2,
+    .pure-u-lg-1-3,
+    .pure-u-lg-2-3,
+    .pure-u-lg-1-4,
+    .pure-u-lg-3-4,
+    .pure-u-lg-1-5,
+    .pure-u-lg-2-5,
+    .pure-u-lg-3-5,
+    .pure-u-lg-4-5,
+    .pure-u-lg-5-5,
+    .pure-u-lg-1-6,
+    .pure-u-lg-5-6,
+    .pure-u-lg-1-8,
+    .pure-u-lg-3-8,
+    .pure-u-lg-5-8,
+    .pure-u-lg-7-8,
+    .pure-u-lg-1-12,
+    .pure-u-lg-5-12,
+    .pure-u-lg-7-12,
+    .pure-u-lg-11-12,
+    .pure-u-lg-1-24,
+    .pure-u-lg-2-24,
+    .pure-u-lg-3-24,
+    .pure-u-lg-4-24,
+    .pure-u-lg-5-24,
+    .pure-u-lg-6-24,
+    .pure-u-lg-7-24,
+    .pure-u-lg-8-24,
+    .pure-u-lg-9-24,
+    .pure-u-lg-10-24,
+    .pure-u-lg-11-24,
+    .pure-u-lg-12-24,
+    .pure-u-lg-13-24,
+    .pure-u-lg-14-24,
+    .pure-u-lg-15-24,
+    .pure-u-lg-16-24,
+    .pure-u-lg-17-24,
+    .pure-u-lg-18-24,
+    .pure-u-lg-19-24,
+    .pure-u-lg-20-24,
+    .pure-u-lg-21-24,
+    .pure-u-lg-22-24,
+    .pure-u-lg-23-24,
+    .pure-u-lg-24-24 {
+        display: inline-block;
+        *display: inline;
+        zoom: 1;
+        letter-spacing: normal;
+        word-spacing: normal;
+        vertical-align: top;
+        text-rendering: auto;
+    }
+
+    .pure-u-lg-1-24 {
+        width: 4.1667%;
+        *width: 4.1357%;
+    }
+
+    .pure-u-lg-1-12,
+    .pure-u-lg-2-24 {
+        width: 8.3333%;
+        *width: 8.3023%;
+    }
+
+    .pure-u-lg-1-8,
+    .pure-u-lg-3-24 {
+        width: 12.5000%;
+        *width: 12.4690%;
+    }
+
+    .pure-u-lg-1-6,
+    .pure-u-lg-4-24 {
+        width: 16.6667%;
+        *width: 16.6357%;
+    }
+
+    .pure-u-lg-1-5 {
+        width: 20%;
+        *width: 19.9690%;
+    }
+
+    .pure-u-lg-5-24 {
+        width: 20.8333%;
+        *width: 20.8023%;
+    }
+
+    .pure-u-lg-1-4,
+    .pure-u-lg-6-24 {
+        width: 25%;
+        *width: 24.9690%;
+    }
+
+    .pure-u-lg-7-24 {
+        width: 29.1667%;
+        *width: 29.1357%;
+    }
+
+    .pure-u-lg-1-3,
+    .pure-u-lg-8-24 {
+        width: 33.3333%;
+        *width: 33.3023%;
+    }
+
+    .pure-u-lg-3-8,
+    .pure-u-lg-9-24 {
+        width: 37.5000%;
+        *width: 37.4690%;
+    }
+
+    .pure-u-lg-2-5 {
+        width: 40%;
+        *width: 39.9690%;
+    }
+
+    .pure-u-lg-5-12,
+    .pure-u-lg-10-24 {
+        width: 41.6667%;
+        *width: 41.6357%;
+    }
+
+    .pure-u-lg-11-24 {
+        width: 45.8333%;
+        *width: 45.8023%;
+    }
+
+    .pure-u-lg-1-2,
+    .pure-u-lg-12-24 {
+        width: 50%;
+        *width: 49.9690%;
+    }
+
+    .pure-u-lg-13-24 {
+        width: 54.1667%;
+        *width: 54.1357%;
+    }
+
+    .pure-u-lg-7-12,
+    .pure-u-lg-14-24 {
+        width: 58.3333%;
+        *width: 58.3023%;
+    }
+
+    .pure-u-lg-3-5 {
+        width: 60%;
+        *width: 59.9690%;
+    }
+
+    .pure-u-lg-5-8,
+    .pure-u-lg-15-24 {
+        width: 62.5000%;
+        *width: 62.4690%;
+    }
+
+    .pure-u-lg-2-3,
+    .pure-u-lg-16-24 {
+        width: 66.6667%;
+        *width: 66.6357%;
+    }
+
+    .pure-u-lg-17-24 {
+        width: 70.8333%;
+        *width: 70.8023%;
+    }
+
+    .pure-u-lg-3-4,
+    .pure-u-lg-18-24 {
+        width: 75%;
+        *width: 74.9690%;
+    }
+
+    .pure-u-lg-19-24 {
+        width: 79.1667%;
+        *width: 79.1357%;
+    }
+
+    .pure-u-lg-4-5 {
+        width: 80%;
+        *width: 79.9690%;
+    }
+
+    .pure-u-lg-5-6,
+    .pure-u-lg-20-24 {
+        width: 83.3333%;
+        *width: 83.3023%;
+    }
+
+    .pure-u-lg-7-8,
+    .pure-u-lg-21-24 {
+        width: 87.5000%;
+        *width: 87.4690%;
+    }
+
+    .pure-u-lg-11-12,
+    .pure-u-lg-22-24 {
+        width: 91.6667%;
+        *width: 91.6357%;
+    }
+
+    .pure-u-lg-23-24 {
+        width: 95.8333%;
+        *width: 95.8023%;
+    }
+
+    .pure-u-lg-1,
+    .pure-u-lg-1-1,
+    .pure-u-lg-5-5,
+    .pure-u-lg-24-24 {
+        width: 100%;
+    }
+}
+
+@media screen and (min-width: 80em) {
+    .pure-u-xl-1,
+    .pure-u-xl-1-1,
+    .pure-u-xl-1-2,
+    .pure-u-xl-1-3,
+    .pure-u-xl-2-3,
+    .pure-u-xl-1-4,
+    .pure-u-xl-3-4,
+    .pure-u-xl-1-5,
+    .pure-u-xl-2-5,
+    .pure-u-xl-3-5,
+    .pure-u-xl-4-5,
+    .pure-u-xl-5-5,
+    .pure-u-xl-1-6,
+    .pure-u-xl-5-6,
+    .pure-u-xl-1-8,
+    .pure-u-xl-3-8,
+    .pure-u-xl-5-8,
+    .pure-u-xl-7-8,
+    .pure-u-xl-1-12,
+    .pure-u-xl-5-12,
+    .pure-u-xl-7-12,
+    .pure-u-xl-11-12,
+    .pure-u-xl-1-24,
+    .pure-u-xl-2-24,
+    .pure-u-xl-3-24,
+    .pure-u-xl-4-24,
+    .pure-u-xl-5-24,
+    .pure-u-xl-6-24,
+    .pure-u-xl-7-24,
+    .pure-u-xl-8-24,
+    .pure-u-xl-9-24,
+    .pure-u-xl-10-24,
+    .pure-u-xl-11-24,
+    .pure-u-xl-12-24,
+    .pure-u-xl-13-24,
+    .pure-u-xl-14-24,
+    .pure-u-xl-15-24,
+    .pure-u-xl-16-24,
+    .pure-u-xl-17-24,
+    .pure-u-xl-18-24,
+    .pure-u-xl-19-24,
+    .pure-u-xl-20-24,
+    .pure-u-xl-21-24,
+    .pure-u-xl-22-24,
+    .pure-u-xl-23-24,
+    .pure-u-xl-24-24 {
+        display: inline-block;
+        *display: inline;
+        zoom: 1;
+        letter-spacing: normal;
+        word-spacing: normal;
+        vertical-align: top;
+        text-rendering: auto;
+    }
+
+    .pure-u-xl-1-24 {
+        width: 4.1667%;
+        *width: 4.1357%;
+    }
+
+    .pure-u-xl-1-12,
+    .pure-u-xl-2-24 {
+        width: 8.3333%;
+        *width: 8.3023%;
+    }
+
+    .pure-u-xl-1-8,
+    .pure-u-xl-3-24 {
+        width: 12.5000%;
+        *width: 12.4690%;
+    }
+
+    .pure-u-xl-1-6,
+    .pure-u-xl-4-24 {
+        width: 16.6667%;
+        *width: 16.6357%;
+    }
+
+    .pure-u-xl-1-5 {
+        width: 20%;
+        *width: 19.9690%;
+    }
+
+    .pure-u-xl-5-24 {
+        width: 20.8333%;
+        *width: 20.8023%;
+    }
+
+    .pure-u-xl-1-4,
+    .pure-u-xl-6-24 {
+        width: 25%;
+        *width: 24.9690%;
+    }
+
+    .pure-u-xl-7-24 {
+        width: 29.1667%;
+        *width: 29.1357%;
+    }
+
+    .pure-u-xl-1-3,
+    .pure-u-xl-8-24 {
+        width: 33.3333%;
+        *width: 33.3023%;
+    }
+
+    .pure-u-xl-3-8,
+    .pure-u-xl-9-24 {
+        width: 37.5000%;
+        *width: 37.4690%;
+    }
+
+    .pure-u-xl-2-5 {
+        width: 40%;
+        *width: 39.9690%;
+    }
+
+    .pure-u-xl-5-12,
+    .pure-u-xl-10-24 {
+        width: 41.6667%;
+        *width: 41.6357%;
+    }
+
+    .pure-u-xl-11-24 {
+        width: 45.8333%;
+        *width: 45.8023%;
+    }
+
+    .pure-u-xl-1-2,
+    .pure-u-xl-12-24 {
+        width: 50%;
+        *width: 49.9690%;
+    }
+
+    .pure-u-xl-13-24 {
+        width: 54.1667%;
+        *width: 54.1357%;
+    }
+
+    .pure-u-xl-7-12,
+    .pure-u-xl-14-24 {
+        width: 58.3333%;
+        *width: 58.3023%;
+    }
+
+    .pure-u-xl-3-5 {
+        width: 60%;
+        *width: 59.9690%;
+    }
+
+    .pure-u-xl-5-8,
+    .pure-u-xl-15-24 {
+        width: 62.5000%;
+        *width: 62.4690%;
+    }
+
+    .pure-u-xl-2-3,
+    .pure-u-xl-16-24 {
+        width: 66.6667%;
+        *width: 66.6357%;
+    }
+
+    .pure-u-xl-17-24 {
+        width: 70.8333%;
+        *width: 70.8023%;
+    }
+
+    .pure-u-xl-3-4,
+    .pure-u-xl-18-24 {
+        width: 75%;
+        *width: 74.9690%;
+    }
+
+    .pure-u-xl-19-24 {
+        width: 79.1667%;
+        *width: 79.1357%;
+    }
+
+    .pure-u-xl-4-5 {
+        width: 80%;
+        *width: 79.9690%;
+    }
+
+    .pure-u-xl-5-6,
+    .pure-u-xl-20-24 {
+        width: 83.3333%;
+        *width: 83.3023%;
+    }
+
+    .pure-u-xl-7-8,
+    .pure-u-xl-21-24 {
+        width: 87.5000%;
+        *width: 87.4690%;
+    }
+
+    .pure-u-xl-11-12,
+    .pure-u-xl-22-24 {
+        width: 91.6667%;
+        *width: 91.6357%;
+    }
+
+    .pure-u-xl-23-24 {
+        width: 95.8333%;
+        *width: 95.8023%;
+    }
+
+    .pure-u-xl-1,
+    .pure-u-xl-1-1,
+    .pure-u-xl-5-5,
+    .pure-u-xl-24-24 {
+        width: 100%;
+    }
+}

static/purecss/side-menu.css

@@ -0,0 +1,248 @@
+body {
+    color: #777;
+}
+
+.pure-img-responsive {
+    max-width: 100%;
+    height: auto;
+}
+
+/*
+Add transition to containers so they can push in and out.
+*/
+#layout,
+#menu,
+.menu-link {
+    -webkit-transition: all 0.2s ease-out;
+    -moz-transition: all 0.2s ease-out;
+    -ms-transition: all 0.2s ease-out;
+    -o-transition: all 0.2s ease-out;
+    transition: all 0.2s ease-out;
+}
+
+/*
+This is the parent `<div>` that contains the menu and the content area.
+*/
+#layout {
+    position: relative;
+    left: 0;
+    padding-left: 0;
+}
+    #layout.active #menu {
+        left: 150px;
+        width: 150px;
+    }
+
+    #layout.active .menu-link {
+        left: 150px;
+    }
+/*
+The content `<div>` is where all your content goes.
+*/
+.content {
+    margin: 0 auto;
+    padding: 0 2em;
+    max-width: 800px;
+    margin-bottom: 50px;
+    line-height: 1.6em;
+}
+
+.header {
+     margin: 0;
+     color: #333;
+     text-align: center;
+     padding: 2.5em 2em 0;
+     border-bottom: 1px solid #eee;
+ }
+    .header h1 {
+        margin: 0.2em 0;
+        font-size: 3em;
+        font-weight: 300;
+    }
+     .header h2 {
+        font-weight: 300;
+        color: #ccc;
+        padding: 0;
+        margin-top: 0;
+    }
+
+.content-subhead {
+    margin: 50px 0 20px 0;
+    font-weight: 300;
+    color: #888;
+}
+
+
+
+/*
+The `#menu` `<div>` is the parent `<div>` that contains the `.pure-menu` that
+appears on the left side of the page.
+*/
+
+#menu {
+    margin-left: -150px; /* "#menu" width */
+    width: 150px;
+    position: fixed;
+    top: 0;
+    left: 0;
+    bottom: 0;
+    z-index: 1000; /* so the menu or its navicon stays above all content */
+    background: #191818;
+    overflow-y: auto;
+    -webkit-overflow-scrolling: touch;
+}
+    /*
+    All anchors inside the menu should be styled like this.
+    */
+    #menu a {
+        color: #999;
+        border: none;
+        padding: 0.6em 0 0.6em 0.6em;
+    }
+
+    /*
+    Remove all background/borders, since we are applying them to #menu.
+    */
+     #menu .pure-menu,
+     #menu .pure-menu ul {
+        border: none;
+        background: transparent;
+    }
+
+    /*
+    Add that light border to separate items into groups.
+    */
+    #menu .pure-menu ul,
+    #menu .pure-menu .menu-item-divided {
+        border-top: 1px solid #333;
+    }
+        /*
+        Change color of the anchor links on hover/focus.
+        */
+        #menu .pure-menu li a:hover,
+        #menu .pure-menu li a:focus {
+            background: #333;
+        }
+
+    /*
+    This styles the selected menu item `<li>`.
+    */
+    #menu .pure-menu-selected,
+    #menu .pure-menu-heading {
+        background: #1f8dd6;
+    }
+        /*
+        This styles a link within a selected menu item `<li>`.
+        */
+        #menu .pure-menu-selected a {
+            color: #fff;
+        }
+
+    /*
+    This styles the menu heading.
+    */
+    #menu .pure-menu-heading {
+        font-size: 110%;
+        color: #fff;
+        margin: 0;
+    }
+
+/* -- Dynamic Button For Responsive Menu -------------------------------------*/
+
+/*
+The button to open/close the Menu is custom-made and not part of Pure. Here's
+how it works:
+*/
+
+/*
+`.menu-link` represents the responsive menu toggle that shows/hides on
+small screens.
+*/
+.menu-link {
+    position: fixed;
+    display: block; /* show this only on small screens */
+    top: 0;
+    left: 0; /* "#menu width" */
+    background: #000;
+    background: rgba(0,0,0,0.7);
+    font-size: 10px; /* change this value to increase/decrease button size */
+    z-index: 10;
+    width: 2em;
+    height: auto;
+    padding: 2.1em 1.6em;
+}
+
+    .menu-link:hover,
+    .menu-link:focus {
+        background: #000;
+    }
+
+    .menu-link span {
+        position: relative;
+        display: block;
+    }
+
+    .menu-link span,
+    .menu-link span:before,
+    .menu-link span:after {
+        background-color: #fff;
+        width: 100%;
+        height: 0.2em;
+    }
+
+        .menu-link span:before,
+        .menu-link span:after {
+            position: absolute;
+            margin-top: -0.6em;
+            content: " ";
+        }
+
+        .menu-link span:after {
+            margin-top: 0.6em;
+        }
+
+
+/* -- Responsive Styles (Media Queries) ------------------------------------- */
+
+/*
+Hides the menu at `48em`, but modify this based on your app's needs.
+*/
+@media (min-width: 48em) {
+
+    .header,
+    .content {
+        padding-left: 2em;
+        padding-right: 2em;
+    }
+
+    #layout {
+        padding-left: 150px; /* left col width "#menu" */
+        left: 0;
+    }
+    #menu {
+        left: 150px;
+    }
+
+    .menu-link {
+        position: fixed;
+        left: 150px;
+        display: none;
+    }
+
+    #layout.active .menu-link {
+        left: 150px;
+    }
+}
+
+@media (max-width: 48em) {
+    /* Only apply this when the window is small. Otherwise, the following
+    case results in extra padding on the left:
+        * Make the window small.
+        * Tap the menu to trigger the active state.
+        * Make the window large again.
+    */
+    #layout.active {
+        position: relative;
+        left: 150px;
+    }
+}