diff --git a/_doc/sphinxdoc/source/conf.py b/_doc/sphinxdoc/source/conf.py
index 98d657e1c..0a84bc4aa 100644
--- a/_doc/sphinxdoc/source/conf.py
+++ b/_doc/sphinxdoc/source/conf.py
@@ -28,5 +28,9 @@
 nbneg_pattern = ".*[\\\\/]temp_.*"
 
 html_context = {
-    'css_files': get_default_stylesheet(['_static/my-styles.css', '_static/gallery.css']),
+    'css_files': get_default_stylesheet([
+        '_static/my-styles.css',
+        '_static/gallery.css',
+        '_static/gallery-dataframe.css',
+    ]),
 }
diff --git a/_doc/sphinxdoc/source/phdoc_static/my-styles.css b/_doc/sphinxdoc/source/phdoc_static/my-styles.css
index 16308d838..936932c84 100644
--- a/_doc/sphinxdoc/source/phdoc_static/my-styles.css
+++ b/_doc/sphinxdoc/source/phdoc_static/my-styles.css
@@ -16,35 +16,6 @@ div.body li {
     line-height: 1.2em;
 }
 
-.wy-nav-top {
-	background-color: #FF0040;
-}
-
-.wy-side-nav-search {
-	background-color: #FF0040;
-}
-
 pre.highlight-default {
 	background-color: #b5b5b5;
 }
-
-table {
-    border: solid 1px #DDEEEE;
-    border-collapse: collapse;
-    border-spacing: 0;
-    font: normal 13px Arial, sans-serif;
-}
-thead th {
-    background-color: #DDEFEF;
-    border: solid 1px #DDEEEE;
-    color: #336B6B;
-    padding: 10px;
-    text-align: left;
-    text-shadow: 1px 1px 1px #fff;
-}
-tbody td {
-    border: solid 1px #DDEEEE;
-    color: #333;
-    padding: 10px;
-    text-shadow: 1px 1px 1px #fff;
-}
diff --git a/_doc/sphinxdoc/source/phdoc_static/solar.css b/_doc/sphinxdoc/source/phdoc_static/solar.css
deleted file mode 100644
index 86fa92b61..000000000
--- a/_doc/sphinxdoc/source/phdoc_static/solar.css
+++ /dev/null
@@ -1,339 +0,0 @@
-/* solar.css
- * Modified from sphinxdoc.css of the sphinxdoc theme.
-*/
-
-@import url("basic.css");
-
-/* -- page layout ----------------------------------------------------------- */
-
-body {
-    font-family: 'Open Sans', sans-serif;
-    font-size: 14px;
-    line-height: 150%;
-    text-align: center;
-    color: #002b36;
-    padding: 0;
-    margin: 0px 80px 0px 80px;
-    min-width: 740px;	
-    -moz-box-shadow: 0px 0px 10px #93a1a1;
-    -webkit-box-shadow: 0px 0px 10px #93a1a1;
-    box-shadow: 0px 0px 10px #93a1a1;
-    background: url("subtle_dots.png") repeat;
-
-}
-
-div.document {
-    background-color: #fcfcfc;
-    text-align: left;
-    background-repeat: repeat-x;
-}
-
-div.bodywrapper {
-    margin: 0 240px 0 0;
-    border-right: 1px dotted #eee8d5;
-}
-
-div.body {
-    background-color: white;
-    margin: 0;
-    padding: 0.5em 20px 20px 20px;
-}
-
-div.related {
-    font-size: 1em;
-    background: #002b36;
-    color: #839496;
-    padding: 5px 0px;
-}
-
-div.related ul {
-    height: 2em;
-    margin: 2px;
-}
-
-div.related ul li {
-    margin: 0;
-    padding: 0;
-    height: 2em;
-    float: left;
-}
-
-div.related ul li.right {
-    float: right;
-    margin-right: 5px;
-}
-
-div.related ul li a {
-    margin: 0;
-    padding: 2px 5px;
-    line-height: 2em;
-    text-decoration: none;
-    color: #839496;
-}
-
-div.related ul li a:hover {
-    background-color: #073642;
-    -webkit-border-radius: 2px;
-    -moz-border-radius: 2px;
-    border-radius: 2px;
-}
-
-div.sphinxsidebarwrapper {
-    padding: 0;
-}
-
-div.sphinxsidebar {
-    margin: 0;
-    padding: 0.5em 15px 15px 0;
-    width: 210px;
-    float: right;
-    font-size: 0.9em;
-    text-align: left;
-}
-
-div.sphinxsidebar h3, div.sphinxsidebar h4 {
-    margin: 1em 0 0.5em 0;
-    font-size: 1em;
-    padding: 0.7em;
-    background-color: #eeeff1;
-}
-
-div.sphinxsidebar h3 a {
-    color: #2E3436;
-}
-
-div.sphinxsidebar ul {
-    padding-left: 1.5em;
-    margin-top: 7px;
-    padding: 0;
-    line-height: 150%;
-    color: #586e75;
-}
-
-div.sphinxsidebar ul ul {
-    margin-left: 20px;
-}
-
-div.sphinxsidebar input {
-    border: 1px solid #eee8d5;
-}
-
-div.footer {
-    background-color: #93a1a1;
-    color: #eee;
-    padding: 3px 8px 3px 0;
-    clear: both;
-    font-size: 0.8em;
-    text-align: right;
-}
-
-div.footer a {
-    color: #eee;
-    text-decoration: none;
-}
-
-/* -- body styles ----------------------------------------------------------- */
-
-p {    
-    margin: 0.8em 0 0.5em 0;
-}
-
-div.body a, div.sphinxsidebarwrapper a {
-    color: #268bd2;
-    text-decoration: none;
-}
-
-div.body a:hover, div.sphinxsidebarwrapper a:hover {
-    border-bottom: 1px solid #268bd2;
-}
-
-h1, h2, h3, h4, h5, h6 {
-    font-family: "Open Sans", sans-serif;
-    font-weight: 300;
-}
-
-h1 {
-    margin: 0;
-    padding: 0.7em 0 0.3em 0;
-    line-height: 1.2em;
-    color: #002b36;
-    text-shadow: #eee 0.1em 0.1em 0.1em;
-}
-
-h2 {
-    margin: 1.3em 0 0.2em 0;
-    padding: 0 0 10px 0;
-    color: #073642;
-    border-bottom: 1px solid #eee;
-}
-
-h3 {
-    margin: 1em 0 -0.3em 0;
-    padding-bottom: 5px;
-}
-
-h3, h4, h5, h6 {
-    color: #073642;
-	border-bottom: 1px dotted #eee;
-}
-
-div.body h1 a, div.body h2 a, div.body h3 a, div.body h4 a, div.body h5 a, div.body h6 a {
-    color: #657B83!important;
-}
-
-h1 a.anchor, h2 a.anchor, h3 a.anchor, h4 a.anchor, h5 a.anchor, h6 a.anchor {
-    display: none;
-    margin: 0 0 0 0.3em;
-    padding: 0 0.2em 0 0.2em;
-    color: #aaa!important;
-}
-
-h1:hover a.anchor, h2:hover a.anchor, h3:hover a.anchor, h4:hover a.anchor,
-h5:hover a.anchor, h6:hover a.anchor {
-    display: inline;
-}
-
-h1 a.anchor:hover, h2 a.anchor:hover, h3 a.anchor:hover, h4 a.anchor:hover,
-h5 a.anchor:hover, h6 a.anchor:hover {
-    color: #777;
-    background-color: #eee;
-}
-
-a.headerlink {
-    color: #c60f0f!important;
-    font-size: 1em;
-    margin-left: 6px;
-    padding: 0 4px 0 4px;
-    text-decoration: none!important;
-}
-
-a.headerlink:hover {
-    background-color: #ccc;
-    color: white!important;
-}
-
-
-cite, code, tt {
-    font-family: 'Source Code Pro', monospace;
-	font-size: 0.9em;
-    letter-spacing: 0.01em;
-    background-color: #eeeff2;
-    font-style: normal;
-}
-
-hr {
-    border: 1px solid #eee;
-    margin: 2em;
-}
-
-.highlight {
-    -webkit-border-radius: 2px;
-    -moz-border-radius: 2px;
-    border-radius: 2px;
-}
-
-pre {
-    font-family: 'Source Code Pro', monospace;
-    font-style: normal;
-	font-size: 0.9em;
-    letter-spacing: 0.015em;
-    line-height: 120%;
-    padding: 0.7em;
-	white-space: pre-wrap;       /* css-3 */
-	white-space: -moz-pre-wrap;  /* Mozilla, since 1999 */
-	white-space: -pre-wrap;      /* Opera 4-6 */
-	white-space: -o-pre-wrap;    /* Opera 7 */
-	word-wrap: break-word;       /* Internet Explorer 5.5+ */
-}
-
-pre a {
-    color: inherit;
-    text-decoration: underline;
-}
-
-td.linenos pre {
-    padding: 0.5em 0;
-}
-
-div.quotebar {
-    background-color: #f8f8f8;
-    max-width: 250px;
-    float: right;
-    padding: 2px 7px;
-    border: 1px solid #ccc;
-}
-
-div.topic {
-    background-color: #f8f8f8;
-}
-
-table {
-    border-collapse: collapse;
-    margin: 0 -0.5em 0 -0.5em;
-}
-
-table td, table th {
-    padding: 0.2em 0.5em 0.2em 0.5em;
-}
-
-div.admonition {
-    font-size: 0.9em;
-    margin: 1em 0 1em 0;
-    border: 1px solid #eee;
-    background-color: #f7f7f7;
-    padding: 0;
-    -moz-box-shadow: 0px 8px 6px -8px #93a1a1;
-    -webkit-box-shadow: 0px 8px 6px -8px #93a1a1;
-    box-shadow: 0px 8px 6px -8px #93a1a1;
-}
-
-div.admonition p, div.admonition div.highlight {
-    margin: 0.5em 1em 0.5em 1em;
-}
-
-div.admonition p.admonition-title
-{
-    margin: 0;
-    padding: 0.2em 0 0.2em 0.6em;
-    color: white;
-    border-bottom: 1px solid #eee8d5;
-    font-weight: bold;
-    background-color: #268bd2;
-}
-
-div.warning p.admonition-title,
-div.important p.admonition-title {
-    background-color: #cb4b16;
-}
-
-div.hint p.admonition-title,
-div.tip p.admonition-title {
-    background-color: #859900;
-}
-
-div.caution p.admonition-title,
-div.attention p.admonition-title,
-div.danger p.admonition-title,
-div.error p.admonition-title {
-    background-color: #dc322f;
-}
-
-div.admonition ul, div.admonition ol {
-    margin: 0.1em 0.5em 0.5em 3em;
-    padding: 0;
-}
-
-div.versioninfo {
-    margin: 1em 0 0 0;
-    border: 1px solid #eee;
-    background-color: #DDEAF0;
-    padding: 8px;
-    line-height: 1.3em;
-    font-size: 0.9em;
-}
-
-div.viewcode-block:target {
-    background-color: #f4debf;
-    border-top: 1px solid #eee;
-    border-bottom: 1px solid #eee;
-}
diff --git a/_doc/sphinxdoc/source/phdoc_static/solarized-dark.css b/_doc/sphinxdoc/source/phdoc_static/solarized-dark.css
deleted file mode 100644
index a566d43ce..000000000
--- a/_doc/sphinxdoc/source/phdoc_static/solarized-dark.css
+++ /dev/null
@@ -1,84 +0,0 @@
-/* solarized dark style for solar theme */
-
-/*style pre scrollbar*/
-pre::-webkit-scrollbar, .highlight::-webkit-scrollbar {
-	height: 0.5em;
-	background: #073642;
-}
-
-pre::-webkit-scrollbar-thumb {
-	border-radius: 1em;
-	background: #C3C1C1;
-}
-
-/* pygments style */
-.highlight .hll { background-color: #ffffcc }
-.highlight  { background: #204B56!important; color: #C3C1C1 }
-.highlight .c { color: #586E75 } /* Comment */
-.highlight .err { color: #C3C1C1 } /* Error */
-.highlight .g { color: #C3C1C1 } /* Generic */
-.highlight .k { color: #859900 } /* Keyword */
-.highlight .l { color: #C3C1C1 } /* Literal */
-.highlight .n { color: #C3C1C1 } /* Name */
-.highlight .o { color: #859900 } /* Operator */
-.highlight .x { color: #CB4B16 } /* Other */
-.highlight .p { color: #C3C1C1 } /* Punctuation */
-.highlight .cm { color: #586E75 } /* Comment.Multiline */
-.highlight .cp { color: #859900 } /* Comment.Preproc */
-.highlight .c1 { color: #586E75 } /* Comment.Single */
-.highlight .cs { color: #859900 } /* Comment.Special */
-.highlight .gd { color: #2AA198 } /* Generic.Deleted */
-.highlight .ge { color: #C3C1C1; font-style: italic } /* Generic.Emph */
-.highlight .gr { color: #DC322F } /* Generic.Error */
-.highlight .gh { color: #CB4B16 } /* Generic.Heading */
-.highlight .gi { color: #859900 } /* Generic.Inserted */
-.highlight .go { color: #C3C1C1 } /* Generic.Output */
-.highlight .gp { color: #C3C1C1 } /* Generic.Prompt */
-.highlight .gs { color: #C3C1C1; font-weight: bold } /* Generic.Strong */
-.highlight .gu { color: #CB4B16 } /* Generic.Subheading */
-.highlight .gt { color: #C3C1C1 } /* Generic.Traceback */
-.highlight .kc { color: #CB4B16 } /* Keyword.Constant */
-.highlight .kd { color: #268BD2 } /* Keyword.Declaration */
-.highlight .kn { color: #859900 } /* Keyword.Namespace */
-.highlight .kp { color: #859900 } /* Keyword.Pseudo */
-.highlight .kr { color: #268BD2 } /* Keyword.Reserved */
-.highlight .kt { color: #DC322F } /* Keyword.Type */
-.highlight .ld { color: #C3C1C1 } /* Literal.Date */
-.highlight .m { color: #2AA198 } /* Literal.Number */
-.highlight .s { color: #2AA198 } /* Literal.String */
-.highlight .na { color: #C3C1C1 } /* Name.Attribute */
-.highlight .nb { color: #B58900 } /* Name.Builtin */
-.highlight .nc { color: #268BD2 } /* Name.Class */
-.highlight .no { color: #CB4B16 } /* Name.Constant */
-.highlight .nd { color: #268BD2 } /* Name.Decorator */
-.highlight .ni { color: #CB4B16 } /* Name.Entity */
-.highlight .ne { color: #CB4B16 } /* Name.Exception */
-.highlight .nf { color: #268BD2 } /* Name.Function */
-.highlight .nl { color: #C3C1C1 } /* Name.Label */
-.highlight .nn { color: #C3C1C1 } /* Name.Namespace */
-.highlight .nx { color: #C3C1C1 } /* Name.Other */
-.highlight .py { color: #C3C1C1 } /* Name.Property */
-.highlight .nt { color: #268BD2 } /* Name.Tag */
-.highlight .nv { color: #268BD2 } /* Name.Variable */
-.highlight .ow { color: #859900 } /* Operator.Word */
-.highlight .w { color: #C3C1C1 } /* Text.Whitespace */
-.highlight .mf { color: #2AA198 } /* Literal.Number.Float */
-.highlight .mh { color: #2AA198 } /* Literal.Number.Hex */
-.highlight .mi { color: #2AA198 } /* Literal.Number.Integer */
-.highlight .mo { color: #2AA198 } /* Literal.Number.Oct */
-.highlight .sb { color: #586E75 } /* Literal.String.Backtick */
-.highlight .sc { color: #2AA198 } /* Literal.String.Char */
-.highlight .sd { color: #C3C1C1 } /* Literal.String.Doc */
-.highlight .s2 { color: #2AA198 } /* Literal.String.Double */
-.highlight .se { color: #CB4B16 } /* Literal.String.Escape */
-.highlight .sh { color: #C3C1C1 } /* Literal.String.Heredoc */
-.highlight .si { color: #2AA198 } /* Literal.String.Interpol */
-.highlight .sx { color: #2AA198 } /* Literal.String.Other */
-.highlight .sr { color: #DC322F } /* Literal.String.Regex */
-.highlight .s1 { color: #2AA198 } /* Literal.String.Single */
-.highlight .ss { color: #2AA198 } /* Literal.String.Symbol */
-.highlight .bp { color: #268BD2 } /* Name.Builtin.Pseudo */
-.highlight .vc { color: #268BD2 } /* Name.Variable.Class */
-.highlight .vg { color: #268BD2 } /* Name.Variable.Global */
-.highlight .vi { color: #268BD2 } /* Name.Variable.Instance */
-.highlight .il { color: #2AA198 } /* Literal.Number.Integer.Long */
diff --git a/src/pyquickhelper/helpgen/default_conf.py b/src/pyquickhelper/helpgen/default_conf.py
index 7680114e3..031a41492 100644
--- a/src/pyquickhelper/helpgen/default_conf.py
+++ b/src/pyquickhelper/helpgen/default_conf.py
@@ -735,13 +735,9 @@ def set_sphinx_variables(fileconf, module_name, author, year, theme, theme_path,
             'http://www.xavierdupre.fr/app/pyquickhelper/helpsphinx/', None),
         'python': ('https://docs.python.org/{.major}'.format(
             sys.version_info), None),
-        'scikit-learn': (
-            'https://scikit-learn.org/stable/',
-            None),
+        'scikit-learn': ('https://scikit-learn.org/stable/', None),
         'scipy': ('https://docs.scipy.org/doc/scipy/reference', None),
-        'sklearn': (
-            'https://scikit-learn.org/stable/',
-            None),
+        'sklearn': ('https://scikit-learn.org/stable/', None),
     }
 
     # information about code
@@ -818,7 +814,7 @@ def modify_commit_function(nbch, date, author, comment):
             'backreferences_dir': example_dir,
             'expected_failing_examples': [],
             'capture_repr': ('_repr_html_', '__repr__'),
-            'ignore_repr_types': r'matplotlib.text|matplotlib.axes',
+            'ignore_repr_types': r'matplotlib[text, axes]',
             'inspect_global_variables': False,
             'remove_config_comments': True,
         }
@@ -1021,11 +1017,10 @@ def get_default_stylesheet(css=None):
     # delayed import to speed up time
     from sphinx.builders.html import Stylesheet
     rel = "_static/" + style_figure_notebook[0]
-    res = [Stylesheet(rel="stylesheet", title="style_figure_notebook", filename=rel)]
+    res = [Stylesheet(rel="stylesheet", filename=rel)]
     if css is not None:
         for cs in css:
-            res.append(Stylesheet(rel="stylesheet", title=os.path.split(cs)[-1],
-                                  filename=cs))
+            res.append(Stylesheet(rel="stylesheet", filename=cs))
     return res