diff --git a/_assets/images/Neon_Cube_01_190513_v01-01.jpg b/_assets/images/Neon_Cube_01_190513_v01-01.jpg
new file mode 100644
index 0000000..35ffe32
Binary files /dev/null and b/_assets/images/Neon_Cube_01_190513_v01-01.jpg differ
diff --git a/_assets/styles/sequencer.scss b/_assets/styles/sequencer.scss
new file mode 100644
index 0000000..cae3164
--- /dev/null
+++ b/_assets/styles/sequencer.scss
@@ -0,0 +1,29 @@
+.sequencer-baseline {
+  position:relative;
+}
+
+.sequencer-wrapper {
+  position: absolute;
+  width: 100%;
+  margin-top: 12%;
+}
+
+.sequencer {
+  display: grid;
+  margin: 0 auto;
+  grid-template-columns: repeat(8, 1fr);
+  transform: rotate(30deg) skew(-30deg);
+  left: 25%;
+  width: 60%;
+}
+
+.sequencer-button {
+	-moz-appearance: none;
+    transform: skew(30deg) rotate(-30deg);
+	background: white;
+	padding-bottom: 100%;
+	margin: 0;
+	&:checked {
+		background: #000;
+	}
+}
\ No newline at end of file
diff --git a/_assets/styles/styles.scss b/_assets/styles/styles.scss
index e4318d2..0ecccb2 100644
--- a/_assets/styles/styles.scss
+++ b/_assets/styles/styles.scss
@@ -10,11 +10,11 @@ $base-line-height: 1.5 !default;
 
 $spacing-unit:     30px !default;
 
-$text-color:       #111 !default;
-$background-color: #fdfdfd !default;
-$brand-color:      #2a7ae2 !default;
+$text-color:       #fdfdfd !default;
+$background-color: #111 !default;
+$brand-color:      white !default;
 
-$grey-color:       #828282 !default;
+$grey-color:       white !default;
 $grey-color-light: lighten($grey-color, 40%) !default;
 $grey-color-dark:  darken($grey-color, 25%) !default;
 
diff --git a/_assets/styles/theme/_base.scss b/_assets/styles/theme/_base.scss
index e61b0be..d83a9d7 100644
--- a/_assets/styles/theme/_base.scss
+++ b/_assets/styles/theme/_base.scss
@@ -107,7 +107,7 @@ a {
   text-decoration: none;
 
   &:visited {
-    color: darken($brand-color, 15%);
+    color: darken($brand-color, 10%);
   }
 
   &:hover {
diff --git a/_assets/styles/theme/_layout.scss b/_assets/styles/theme/_layout.scss
index c69af11..a473b14 100644
--- a/_assets/styles/theme/_layout.scss
+++ b/_assets/styles/theme/_layout.scss
@@ -3,7 +3,6 @@
  */
 .site-header {
   border-top: 5px solid $grey-color-dark;
-  border-bottom: 1px solid $grey-color-light;
   min-height: $spacing-unit * 1.865;
 
   // Positioning context for the mobile navigation icon
@@ -20,7 +19,6 @@
 
   &,
   &:visited {
-    color: $grey-color-dark;
   }
 }
 
diff --git a/_includes/ring.html b/_includes/ring.html
index 7f71c5c..e064ec2 100644
--- a/_includes/ring.html
+++ b/_includes/ring.html
@@ -1 +1 @@
-<div id="tilde_ring" style="background-color:white; text-align:center; border-radius:10px;"> <p><em>a member of the tilde.town ~ring</em></p> <p> <a id="tilde_town_ring" class="tilde_ring_link" href="">random ~user</a> | <a id="random_tildebox" class="tilde_ring_link" href="">random ~box</a> | <a id="tilde_town_ring_next" class="tilde_ring_link" href="">next ~user</a> </p> <p><a href="https://tilde.town/~um/tilde_ring/join.html">join</a></p> <script type="text/javascript"> var ringjs = document.createElement('script') ringjs.src = document.location.protocol + '//tilde.town/~um/tilde_ring/tilde_ring.js' document.getElementById('tilde_ring').appendChild(ringjs) </script> </div>
\ No newline at end of file
+<div id="tilde_ring" > <p><em>a member of the tilde.town ~ring</em></p> <p> <a id="tilde_town_ring" class="tilde_ring_link" href="">random ~user</a> | <a id="random_tildebox" class="tilde_ring_link" href="">random ~box</a> | <a id="tilde_town_ring_next" class="tilde_ring_link" href="">next ~user</a> </p> <p><a href="https://tilde.town/~um/tilde_ring/join.html">join</a></p> <script type="text/javascript"> var ringjs = document.createElement('script') ringjs.src = document.location.protocol + '//tilde.town/~um/tilde_ring/tilde_ring.js' document.getElementById('tilde_ring').appendChild(ringjs) </script> </div>
\ No newline at end of file
diff --git a/_layouts/post-plain.html b/_layouts/post-plain.html
new file mode 100644
index 0000000..a1f8856
--- /dev/null
+++ b/_layouts/post-plain.html
@@ -0,0 +1,19 @@
+---
+layout: default
+---
+<article class="post h-entry" itemscope itemtype="http://schema.org/BlogPosting">
+
+  <header class="post-header">
+    <h6 class="post-title p-name" itemprop="name headline">{{ page.title | escape }}</h1>
+  </header>
+
+  <div class="post-content e-content" itemprop="articleBody">
+    {{ content }}
+  </div>
+
+  {%- if site.disqus.shortname -%}
+    {%- include disqus_comments.html -%}
+  {%- endif -%}
+
+  <a class="u-url" href="{{ page.url | relative_url }}" hidden></a>
+</article>
diff --git a/_posts/2019-05-12-welcome-to-jekyll.markdown b/_posts/2019-05-12-welcome-to-jekyll.markdown
index 5767081..16f1c1a 100644
--- a/_posts/2019-05-12-welcome-to-jekyll.markdown
+++ b/_posts/2019-05-12-welcome-to-jekyll.markdown
@@ -1,7 +1,7 @@
 ---
 layout: post
 title:  "Welcome to Jekyll!"
-date:   2019-05-12 20:12:29 +0800
+date:   2019-05-12 00:12:29 +0800
 categories: jekyll update
 ---
 You’ll find this post in your `_posts` directory. Go ahead and edit it and re-build the site to see your changes. You can rebuild the site in many different ways, but the most common way is to run `jekyll serve`, which launches a web server and auto-regenerates your site when a file is updated.
diff --git a/_posts/sketches/2019-05-13-sequencer.markdown b/_posts/sketches/2019-05-13-sequencer.markdown
new file mode 100644
index 0000000..dcbd067
--- /dev/null
+++ b/_posts/sketches/2019-05-13-sequencer.markdown
@@ -0,0 +1,24 @@
+---
+layout: post-plain
+title:  "Sequencer"
+date:   2019-05-12 09:16 +0800
+categories: toys
+---
+{% asset sequencer.css %}
+<div class="sequencer-baseline" >
+	<div class="sequencer-wrapper" >
+		<div class="sequencer" >
+			{% for y in (1..4) %}
+				{% for x in (1..8) %}
+					<input class="sequencer-button row-{{y}} col-{{x}}" type="checkbox" />
+				{% endfor %}
+			{% endfor %}
+		</div>
+	</div>
+</div>
+{% asset "Neon_Cube_01_190513_v01-01.jpg"
+	@optim
+	srcset:width=900
+	srcset:width=500
+	srcset:width=300
+ %}
\ No newline at end of file
diff --git a/_sass/minima.scss b/_sass/minima.scss
deleted file mode 100644
index cb0865b..0000000
--- a/_sass/minima.scss
+++ /dev/null
@@ -1,51 +0,0 @@
-@charset "utf-8";
-
-// Define defaults for each variable.
-
-$base-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol" !default;
-$base-font-size:   16px !default;
-$base-font-weight: 400 !default;
-$small-font-size:  $base-font-size * 0.875 !default;
-$base-line-height: 1.5 !default;
-
-$spacing-unit:     30px !default;
-
-$text-color:       #111 !default;
-$background-color: #fdfdfd !default;
-$brand-color:      #2a7ae2 !default;
-
-$grey-color:       #828282 !default;
-$grey-color-light: lighten($grey-color, 40%) !default;
-$grey-color-dark:  darken($grey-color, 25%) !default;
-
-$table-text-align: left !default;
-
-// Width of the content area
-$content-width:    800px !default;
-
-$on-palm:          600px !default;
-$on-laptop:        800px !default;
-
-// Use media queries like this:
-// @include media-query($on-palm) {
-//   .wrapper {
-//     padding-right: $spacing-unit / 2;
-//     padding-left: $spacing-unit / 2;
-//   }
-// }
-@mixin media-query($device) {
-  @media screen and (max-width: $device) {
-    @content;
-  }
-}
-
-@mixin relative-font-size($ratio) {
-  font-size: $base-font-size * $ratio;
-}
-
-// Import partials.
-@import
-  "minima/base",
-  "minima/layout",
-  "minima/syntax-highlighting"
-;
diff --git a/_sass/minima/_base.scss b/_sass/minima/_base.scss
deleted file mode 100644
index e61b0be..0000000
--- a/_sass/minima/_base.scss
+++ /dev/null
@@ -1,254 +0,0 @@
-/**
- * Reset some basic elements
- */
-body, h1, h2, h3, h4, h5, h6,
-p, blockquote, pre, hr,
-dl, dd, ol, ul, figure {
-  margin: 0;
-  padding: 0;
-}
-
-
-
-/**
- * Basic styling
- */
-body {
-  font: $base-font-weight #{$base-font-size}/#{$base-line-height} $base-font-family;
-  color: $text-color;
-  background-color: $background-color;
-  -webkit-text-size-adjust: 100%;
-  -webkit-font-feature-settings: "kern" 1;
-     -moz-font-feature-settings: "kern" 1;
-       -o-font-feature-settings: "kern" 1;
-          font-feature-settings: "kern" 1;
-  font-kerning: normal;
-  display: flex;
-  min-height: 100vh;
-  flex-direction: column;
-}
-
-
-
-/**
- * Set `margin-bottom` to maintain vertical rhythm
- */
-h1, h2, h3, h4, h5, h6,
-p, blockquote, pre,
-ul, ol, dl, figure,
-%vertical-rhythm {
-  margin-bottom: $spacing-unit / 2;
-}
-
-
-
-/**
- * `main` element
- */
-main {
-  display: block; /* Default value of `display` of `main` element is 'inline' in IE 11. */
-}
-
-
-
-/**
- * Images
- */
-img {
-  max-width: 100%;
-  vertical-align: middle;
-}
-
-
-
-/**
- * Figures
- */
-figure > img {
-  display: block;
-}
-
-figcaption {
-  font-size: $small-font-size;
-}
-
-
-
-/**
- * Lists
- */
-ul, ol {
-  margin-left: $spacing-unit;
-}
-
-li {
-  > ul,
-  > ol {
-    margin-bottom: 0;
-  }
-}
-
-
-
-/**
- * Headings
- */
-h1, h2, h3, h4, h5, h6 {
-  font-weight: $base-font-weight;
-}
-
-
-
-/**
- * Links
- */
-a {
-  color: $brand-color;
-  text-decoration: none;
-
-  &:visited {
-    color: darken($brand-color, 15%);
-  }
-
-  &:hover {
-    color: $text-color;
-    text-decoration: underline;
-  }
-
-  .social-media-list &:hover {
-    text-decoration: none;
-
-    .username {
-      text-decoration: underline;
-    }
-  }
-}
-
-
-/**
- * Blockquotes
- */
-blockquote {
-  color: $grey-color;
-  border-left: 4px solid $grey-color-light;
-  padding-left: $spacing-unit / 2;
-  @include relative-font-size(1.125);
-  letter-spacing: -1px;
-  font-style: italic;
-
-  > :last-child {
-    margin-bottom: 0;
-  }
-}
-
-
-
-/**
- * Code formatting
- */
-pre,
-code {
-  @include relative-font-size(0.9375);
-  border: 1px solid $grey-color-light;
-  border-radius: 3px;
-  background-color: #eef;
-}
-
-code {
-  padding: 1px 5px;
-}
-
-pre {
-  padding: 8px 12px;
-  overflow-x: auto;
-
-  > code {
-    border: 0;
-    padding-right: 0;
-    padding-left: 0;
-  }
-}
-
-
-
-/**
- * Wrapper
- */
-.wrapper {
-  max-width: -webkit-calc(#{$content-width} - (#{$spacing-unit} * 2));
-  max-width:         calc(#{$content-width} - (#{$spacing-unit} * 2));
-  margin-right: auto;
-  margin-left: auto;
-  padding-right: $spacing-unit;
-  padding-left: $spacing-unit;
-  @extend %clearfix;
-
-  @include media-query($on-laptop) {
-    max-width: -webkit-calc(#{$content-width} - (#{$spacing-unit}));
-    max-width:         calc(#{$content-width} - (#{$spacing-unit}));
-    padding-right: $spacing-unit / 2;
-    padding-left: $spacing-unit / 2;
-  }
-}
-
-
-
-/**
- * Clearfix
- */
-%clearfix:after {
-  content: "";
-  display: table;
-  clear: both;
-}
-
-
-
-/**
- * Icons
- */
-
-.svg-icon {
-    width: 16px;
-    height: 16px;
-    display: inline-block;
-    fill: #{$grey-color};
-    padding-right: 5px;
-    vertical-align: text-top;
-}
-
-.social-media-list {
-  li + li {
-    padding-top: 5px;
-  }
-}
-
-
-
-/**
- * Tables
- */
-table {
-  margin-bottom: $spacing-unit;
-  width: 100%;
-  text-align: $table-text-align;
-  color: lighten($text-color, 18%);
-  border-collapse: collapse;
-  border: 1px solid $grey-color-light;
-  tr {
-    &:nth-child(even) {
-      background-color: lighten($grey-color-light, 6%);
-    }
-  }
-  th, td {
-    padding: ($spacing-unit / 3) ($spacing-unit / 2);
-  }
-  th {
-    background-color: lighten($grey-color-light, 3%);
-    border: 1px solid darken($grey-color-light, 4%);
-    border-bottom-color: darken($grey-color-light, 12%);
-  }
-  td {
-    border: 1px solid $grey-color-light;
-  }
-}
diff --git a/_sass/minima/_layout.scss b/_sass/minima/_layout.scss
deleted file mode 100644
index c69af11..0000000
--- a/_sass/minima/_layout.scss
+++ /dev/null
@@ -1,255 +0,0 @@
-/**
- * Site header
- */
-.site-header {
-  border-top: 5px solid $grey-color-dark;
-  border-bottom: 1px solid $grey-color-light;
-  min-height: $spacing-unit * 1.865;
-
-  // Positioning context for the mobile navigation icon
-  position: relative;
-}
-
-.site-title {
-  @include relative-font-size(1.625);
-  font-weight: 300;
-  line-height: $base-line-height * $base-font-size * 2.25;
-  letter-spacing: -1px;
-  margin-bottom: 0;
-  float: left;
-
-  &,
-  &:visited {
-    color: $grey-color-dark;
-  }
-}
-
-.site-nav {
-  float: right;
-  line-height: $base-line-height * $base-font-size * 2.25;
-
-  .nav-trigger {
-      display: none;
-  }
-
-  .menu-icon {
-    display: none;
-  }
-
-  .page-link {
-    color: $text-color;
-    line-height: $base-line-height;
-
-    // Gaps between nav items, but not on the last one
-    &:not(:last-child) {
-      margin-right: 20px;
-    }
-  }
-
-  @include media-query($on-palm) {
-    position: absolute;
-    top: 9px;
-    right: $spacing-unit / 2;
-    background-color: $background-color;
-    border: 1px solid $grey-color-light;
-    border-radius: 5px;
-    text-align: right;
-
-    label[for="nav-trigger"] {
-      display: block;
-      float: right;
-      width: 36px;
-      height: 36px;
-      z-index: 2;
-      cursor: pointer;
-    }
-
-    .menu-icon {
-      display: block;
-      float: right;
-      width: 36px;
-      height: 26px;
-      line-height: 0;
-      padding-top: 10px;
-      text-align: center;
-
-      > svg {
-        fill: $grey-color-dark;
-      }
-    }
-
-    input ~ .trigger {
-      clear: both;
-      display: none;
-    }
-
-    input:checked ~ .trigger {
-      display: block;
-      padding-bottom: 5px;
-    }
-
-    .page-link {
-      display: block;
-      padding: 5px 10px;
-
-      &:not(:last-child) {
-        margin-right: 0;
-      }
-      margin-left: 20px;
-    }
-  }
-}
-
-
-
-/**
- * Site footer
- */
-.site-footer {
-  border-top: 1px solid $grey-color-light;
-  padding: $spacing-unit 0;
-}
-
-.footer-heading {
-  @include relative-font-size(1.125);
-  margin-bottom: $spacing-unit / 2;
-}
-
-.contact-list,
-.social-media-list {
-  list-style: none;
-  margin-left: 0;
-}
-
-.footer-col-wrapper {
-  @include relative-font-size(0.9375);
-  color: $grey-color;
-  margin-left: -$spacing-unit / 2;
-  @extend %clearfix;
-}
-
-.footer-col {
-  float: left;
-  margin-bottom: $spacing-unit / 2;
-  padding-left: $spacing-unit / 2;
-}
-
-.footer-col-1 {
-  width: -webkit-calc(35% - (#{$spacing-unit} / 2));
-  width:         calc(35% - (#{$spacing-unit} / 2));
-}
-
-.footer-col-2 {
-  width: -webkit-calc(20% - (#{$spacing-unit} / 2));
-  width:         calc(20% - (#{$spacing-unit} / 2));
-}
-
-.footer-col-3 {
-  width: -webkit-calc(45% - (#{$spacing-unit} / 2));
-  width:         calc(45% - (#{$spacing-unit} / 2));
-}
-
-@include media-query($on-laptop) {
-  .footer-col-1,
-  .footer-col-2 {
-    width: -webkit-calc(50% - (#{$spacing-unit} / 2));
-    width:         calc(50% - (#{$spacing-unit} / 2));
-  }
-
-  .footer-col-3 {
-    width: -webkit-calc(100% - (#{$spacing-unit} / 2));
-    width:         calc(100% - (#{$spacing-unit} / 2));
-  }
-}
-
-@include media-query($on-palm) {
-  .footer-col {
-    float: none;
-    width: -webkit-calc(100% - (#{$spacing-unit} / 2));
-    width:         calc(100% - (#{$spacing-unit} / 2));
-  }
-}
-
-
-
-/**
- * Page content
- */
-.page-content {
-  padding: $spacing-unit 0;
-  flex: 1;
-}
-
-.page-heading {
-  @include relative-font-size(2);
-}
-
-.post-list-heading {
-  @include relative-font-size(1.75);
-}
-
-.post-list {
-  margin-left: 0;
-  list-style: none;
-
-  > li {
-    margin-bottom: $spacing-unit;
-  }
-}
-
-.post-meta {
-  font-size: $small-font-size;
-  color: $grey-color;
-}
-
-.post-link {
-  display: block;
-  @include relative-font-size(1.5);
-}
-
-
-
-/**
- * Posts
- */
-.post-header {
-  margin-bottom: $spacing-unit;
-}
-
-.post-title {
-  @include relative-font-size(2.625);
-  letter-spacing: -1px;
-  line-height: 1;
-
-  @include media-query($on-laptop) {
-    @include relative-font-size(2.25);
-  }
-}
-
-.post-content {
-  margin-bottom: $spacing-unit;
-
-  h2 {
-    @include relative-font-size(2);
-
-    @include media-query($on-laptop) {
-      @include relative-font-size(1.75);
-    }
-  }
-
-  h3 {
-    @include relative-font-size(1.625);
-
-    @include media-query($on-laptop) {
-      @include relative-font-size(1.375);
-    }
-  }
-
-  h4 {
-    @include relative-font-size(1.25);
-
-    @include media-query($on-laptop) {
-      @include relative-font-size(1.125);
-    }
-  }
-}
diff --git a/_sass/minima/_syntax-highlighting.scss b/_sass/minima/_syntax-highlighting.scss
deleted file mode 100644
index bccdb89..0000000
--- a/_sass/minima/_syntax-highlighting.scss
+++ /dev/null
@@ -1,71 +0,0 @@
-/**
- * Syntax highlighting styles
- */
-.highlight {
-  background: #fff;
-  @extend %vertical-rhythm;
-
-  .highlighter-rouge & {
-    background: #eef;
-  }
-
-  .c     { color: #998; font-style: italic } // Comment
-  .err   { color: #a61717; background-color: #e3d2d2 } // Error
-  .k     { font-weight: bold } // Keyword
-  .o     { font-weight: bold } // Operator
-  .cm    { color: #998; font-style: italic } // Comment.Multiline
-  .cp    { color: #999; font-weight: bold } // Comment.Preproc
-  .c1    { color: #998; font-style: italic } // Comment.Single
-  .cs    { color: #999; font-weight: bold; font-style: italic } // Comment.Special
-  .gd    { color: #000; background-color: #fdd } // Generic.Deleted
-  .gd .x { color: #000; background-color: #faa } // Generic.Deleted.Specific
-  .ge    { font-style: italic } // Generic.Emph
-  .gr    { color: #a00 } // Generic.Error
-  .gh    { color: #999 } // Generic.Heading
-  .gi    { color: #000; background-color: #dfd } // Generic.Inserted
-  .gi .x { color: #000; background-color: #afa } // Generic.Inserted.Specific
-  .go    { color: #888 } // Generic.Output
-  .gp    { color: #555 } // Generic.Prompt
-  .gs    { font-weight: bold } // Generic.Strong
-  .gu    { color: #aaa } // Generic.Subheading
-  .gt    { color: #a00 } // Generic.Traceback
-  .kc    { font-weight: bold } // Keyword.Constant
-  .kd    { font-weight: bold } // Keyword.Declaration
-  .kp    { font-weight: bold } // Keyword.Pseudo
-  .kr    { font-weight: bold } // Keyword.Reserved
-  .kt    { color: #458; font-weight: bold } // Keyword.Type
-  .m     { color: #099 } // Literal.Number
-  .s     { color: #d14 } // Literal.String
-  .na    { color: #008080 } // Name.Attribute
-  .nb    { color: #0086B3 } // Name.Builtin
-  .nc    { color: #458; font-weight: bold } // Name.Class
-  .no    { color: #008080 } // Name.Constant
-  .ni    { color: #800080 } // Name.Entity
-  .ne    { color: #900; font-weight: bold } // Name.Exception
-  .nf    { color: #900; font-weight: bold } // Name.Function
-  .nn    { color: #555 } // Name.Namespace
-  .nt    { color: #000080 } // Name.Tag
-  .nv    { color: #008080 } // Name.Variable
-  .ow    { font-weight: bold } // Operator.Word
-  .w     { color: #bbb } // Text.Whitespace
-  .mf    { color: #099 } // Literal.Number.Float
-  .mh    { color: #099 } // Literal.Number.Hex
-  .mi    { color: #099 } // Literal.Number.Integer
-  .mo    { color: #099 } // Literal.Number.Oct
-  .sb    { color: #d14 } // Literal.String.Backtick
-  .sc    { color: #d14 } // Literal.String.Char
-  .sd    { color: #d14 } // Literal.String.Doc
-  .s2    { color: #d14 } // Literal.String.Double
-  .se    { color: #d14 } // Literal.String.Escape
-  .sh    { color: #d14 } // Literal.String.Heredoc
-  .si    { color: #d14 } // Literal.String.Interpol
-  .sx    { color: #d14 } // Literal.String.Other
-  .sr    { color: #009926 } // Literal.String.Regex
-  .s1    { color: #d14 } // Literal.String.Single
-  .ss    { color: #990073 } // Literal.String.Symbol
-  .bp    { color: #999 } // Name.Builtin.Pseudo
-  .vc    { color: #008080 } // Name.Variable.Class
-  .vg    { color: #008080 } // Name.Variable.Global
-  .vi    { color: #008080 } // Name.Variable.Instance
-  .il    { color: #099 } // Literal.Number.Integer.Long
-}
diff --git a/assets/main.scss b/assets/main.scss
deleted file mode 100644
index c60ebe4..0000000
--- a/assets/main.scss
+++ /dev/null
@@ -1,5 +0,0 @@
----
-# Only the main Sass file needs front matter (the dashes are enough)
----
-
-@import "minima";