html {
  font-size: 1em;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Segoe UI", "Noto Sans Japanese", "ヒラギノ角ゴ ProN W3", Meiryo, sans-serif;
  color: #444444;
  overflow-y: scroll;
  line-height: 1.2;
}
a {
  color: #2060d0;
  text-decoration: none;
}
a:hover, a:active {
  color: #5090ff;
}
hr {
  height: 1px;
  border: 0;
  border-top: solid 1px lightgray;
  margin: 0;
}
pre, code {
  font-family: Consolas, 'Courier New', Courier, Monaco, monospace;
  background-color: #F0F3F3;
}
pre {
  padding: 4px 8px;
}
:not(pre) > code {
  padding: 2px 4px;
  margin: 0 2px;
}
blockquote {
  margin: 0;
  margin-left: 40px;
  border-left: solid 4px #b4c6c7;
  padding-left: 8px;
  font-style: normal;
  color: #7080a0;
}
blockquote blockquote {
  margin-left: 0;
  border-left-color: #e7c3e5;
}
blockquote blockquote blockquote {
  border-left-color: #c3e7d2;
}
blockquote blockquote blockquote blockquote {
  border-left-color: lightgray;
}

/* Site header */
.site-header {
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}
.site-navi {
  display: -webkit-flex;
  display: flex;
  -webkit-justify-content: flex-end;
  justify-content: flex-end;
  -webkit-align-items: baseline;
  align-items: baseline;
  padding-bottom: 8px;
}
.site-navi a {
  color: inherit;
  text-decoration: none;
}
.site-navi a:hover, .site-navi a:active {
  color: gray;
}
.site-title {
  -webkit-flex-grow: 1;
  flex-grow: 1;
  font-size: 2rem;
  margin: 0;
  margin-top: 10px;
  padding: 0;
  font-weight: normal;
}
.site-navi-items {
  -webkit-flex-grow: 0;
  flex-grow: 0;
  display: -webkit-flex;
  display: flex;
  -webkit-align-items: flex-end;
  -webkit-flex-wrap: wrap;
  -webkit-justify-content: flex-end;
  justify-content: flex-end;
  flex-wrap: wrap;
  align-items: flex-end;
  font-size: 1.2em;
  list-style-type: none;
  margin: 0;
  margin-top: 10px;
  padding: 0;
}
.site-navi-items li {
  padding-left: 20px;
  white-space: nowrap;
}
.site-header-bottom {
  margin-top: 0;
  margin-bottom: 40px;
  margin-left: auto;
  margin-right: auto;
  width: 100%;
}

/* Breadcrumb */
.breadcrumb {
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 20px;
  font-size: 1.6em;
}

/* Code highlight */
.highlight pre, .highlight code {
  background-color: inherit;
  padding: 0;
}

/* Main contents */
.main {
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

/* article */
.article {
  margin-bottom: 40px;
  line-height: 1.5;
}
.article img {
  max-width: 100%;
  box-sizing: border-box;
  border: solid 1px lightgray;
  padding: 4px;
}
.article > table {
  width: auto;
  overflow-x: auto;
  overflow-y: hidden;
  border: solid 1px lightgray;
  border-spacing: 0;
  border-collapse: collapse;
}
.article > table th, .article > table td {
  border: solid 1px lightgray;
  padding: 4px;
}
.article > div {
  width: auto;
  overflow-x: auto;
  overflow-y: hidden;
}
.article > pre {
  width: auto;
  overflow-x: auto;
  overflow-y: hidden;
}
.article-image {
  width: 100%;
  box-sizing: border-box;
  margin-bottom: 20px;
}
.article-title {
  margin: 0;
  padding: 0;
}
.article-subtitle {
  margin: 0;
  padding: 0;
}
.article-title-series {
  margin: 0;
  padding: 0;
}
.article-title-series a {
  color: inherit;
}
.article-title-series a:hover, .article-title-series a:active {
  color: gray;
}
.article-title-bottom {
  margin-top: 5px;
}
.about .article-title-bottom {
  margin-bottom: 40px;
}
.article .article-meta {
  list-style-type: none;
  padding: 0;
  margin: 5px 0 40px 0;
  display: -webkit-flex;
  display: flex;
  -webkit-align-items: flex-end;
  align-items: flex-end;
  -webkit-flex-wrap: wrap;
  flex-wrap: wrap;
}
.article-meta a {
  color: inherit;
}
.article-meta a:hover, .article-meta a:active {
  color: gray;
}
.article-meta li {
  padding: 0;
  padding-right: 4px;
  margin: 0;
}
.article-meta li.article-meta-date {
  padding: 0;
  padding-right: 24px;
}

.article-series {
  margin-bottom: 40px;
}
.article-series .series-title a {
  color: inherit;
}
.article-series .series-title a:hover, .article-series .series-title a:active {
  color: gray;
}
.article-series .active {
}

.article-share {
  list-style-type: none;
  padding: 0;
  margin: 0;
  margin-bottom: 40px;
  display: -webkit-flex;
  display: flex;
  -webkit-align-items: flex-end;
  align-items: flex-end;
  -webkit-flex-wrap: wrap;
  flex-wrap: wrap;
}
.article-share li {
  margin-right: 4px;
  vertical-align: bottom;
  padding: 0;
  font-size: 0.8em;
}

.article-share li a:hover, .article-share li a:active {
  color: #fff;
}

.disqus-comments {
  margin-bottom: 40px;
}
.article-pager {
}

.toc {
  float: right;
  padding: 4px;
  margin: 0;
  margin-left: 10px;
  margin-bottom: 10px;
  border: solid 1px lightgray;
}
.toc ul {
  list-style-type: none;
  padding: 0;
  padding-left: 12px;
  margin: 0;
}
.toc nav > ul {
  padding-left: 0;
}

/* pager */
.pager {
  list-style-type: none;
  padding: 0;
  display: -webkit-flex;
  display: flex;
  -webkit-justify-content: center;
  justify-content: center;
}
.pager-newer {
  margin-right: 40px;
}
.pager-older {
}
.pager-noitem {
  color: gray;
}

/* About */
.author {
}
.author-name {
  font-size: 1.2em;
  font-weight: bold;
  margin-bottom: 10px;
  text-align: center;
}
.author-avatar-wrapper {
  margin-left: auto;
  margin-right: auto;
  padding: 0;
  width:158px;
  height:158px;
  border-radius: 50%;
  border: solid 1px lightgray;
}
.author-avatar {
  width:150px;
  height:150px;
  margin: 4px;
  border-radius: 50%;
  background-color: lightgray;
  background-repeat: no-repeat;
  background-position: center center;
  background-size: contain;
}
.author-social {
  list-style-type: none;
  padding: 0;
  display: -webkit-flex;
  display: flex;
  -webkit-justify-content: center;
  justify-content: center;
  -webkit-flex-wrap: wrap;
  flex-wrap: wrap;
}
.author-social li {
  font-size: 1.5em;
  margin-left: 6px;
  margin-right: 6px;
}
.author-social a {
  color: inherit;
}
.author-social a:hover, .author-social a:active {
  color: gray;
}

/* List page */
.list {
}
.list .article {
  padding-bottom: 40px;
  margin-bottom: 40px;
  border-bottom: solid 1px lightgray;
}
.list .article-titles {
  color: inherit;
}
.list .article-titles:hover, .list .article-titles:active {
  color: gray;
}
.list .article-meta {
  margin-top: 6px;
  margin-bottom: 15px;
}
.list .article-image {
  width: 200px;
  float: left;
  margin: 0;
  margin-right: 8px;
}
.list .article-content {
}
.list .article-readmore {
}
.list .article-floatclear {
  clear: both;
  height: 0;
}

/* Site footer */
.site-footer {
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  margin-top: 70px;
  margin-bottom: 20px;
  font-size: 0.8rem;
  display: -webkit-flex;
  display: flex;
  -webkit-align-items: baseline;
  align-items: baseline;
  -webkit-flex-wrap: wrap;
  flex-wrap: wrap;

}

/* Footer */
.site-footer .copyright {
  -webkit-flex-grow: 0;
  flex-grow: 0;
  margin-right: 10px;
}
.site-footer-items {
  -webkit-flex-grow: 0;
  flex-grow: 0;
  list-style-type: none;
  margin: 0;
  padding: 0;
  display: -webkit-flex;
  display: flex;
  -webkit-align-items: baseline;
  align-items: baseline;
  -webkit-flex-wrap: wrap;
  flex-wrap: wrap;
}
.site-footer-items li {
  font-size: 0.8rem;
  margin: 0 4px 0 4px;
  padding: 0;
}
.site-footer .powerdby {
  -webkit-flex-grow: 1;
  flex-grow: 1;
  margin-left: 10px;
  text-align: right;
}

/* Terms page */
.terms {
  padding: 0 20px 0 20px;
}
.terms > ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
}
.terms > ul > li {
  padding: 0 0 3px 0;
  margin: 0 0 3px 0;
  border-bottom: 1px solid lightgray;
  display: -webkit-flex;
  display: flex;
}
.archives > ul > li > a {
  -webkit-flex-grow: 0;
  flex-grow: 0;
}
.terms > ul > li time {
  -webkit-flex-grow: 1;
  flex-grow: 1;
  text-align: right;
}

/* Archives page */
.archives {
  padding: 0 20px 0 20px;
}
.archives ul:not(.taxonomies) {
  list-style-type: none;
  margin: 0;
  padding: 0;
}
.archives .archives-month, .archives .archives-item {
  padding: 0 0 3px 0;
  margin: 0 0 3px 0;
  border-bottom: 1px solid lightgray;
  display: -webkit-flex;
  display: flex;
}
.archives .archives-monthly-container {
  padding: 0;
  margin: 0;
  margin-bottom: 20px;
  border: 0;
}
.archives .archives-item > a {
  -webkit-flex-grow: 0;
  flex-grow: 0;
}
.archives .archives-item > a:visited {
  color: #a8a8a8;
}
.archives .archives-item time {
  -webkit-flex-grow: 1;
  flex-grow: 1;
  text-align: right;
}
.archives ul.taxonomies {
  -webkit-flex-grow: 0;
  flex-grow: 0;
  list-style-type: none;
  margin: 0;
  padding: 0 0 0 10px;
  display: -webkit-flex;
  display: flex;
}
.archives ul.taxonomies li {
  padding: 0 0 0 8px;
}
.archives ul.taxonomies li a {
  color: inherit;
  font-size: 0.8em;
}
.archives ul.taxonomies li a:hover, .archives ul.taxonomies li a:active {
  color: gray;
}

.pagination {
  list-style-type: none;
  padding: 0;
  margin-top: 20px;
  margin-bottom: 0px;
  display: -webkit-flex;
  display: flex;
  -webkit-justify-content: center;
  justify-content: center;
}
.pagination li {
  padding: 0 5px 0 5px;
}
.pagination li.active a {
  pointer-events: none;
  cursor: default;
  text-decoration:none;
  color: inherit;
}
.pagination li.active a:hover, .pagination li.active a:active {
  color: gray;
}

.icon {
  display: inline-block;
  width: 1em;
  height: 1em;
  stroke-width: 0;
  stroke: currentColor;
  fill: currentColor;
}

.error h1 {
  text-align: center;
}

/* Mobile */
@media screen and (max-width: 768px) {
  .site-header, .site-header-bottom, .main, .breadcrumb, .site-footer {
    width: 98%;
    box-sizing: border-box;
  }
  .list .article-image {
    width: 100%;
    box-sizing: border-box;
    float: none;
    margin: 0;
  }
  .toc {
    display: none;
  }
  .archives ul.taxonomies, .archives .archives-item time {
    display: none;
  }
  .terms > ul > li time {
    display: none;
  }
  .site-navi {
    -webkit-flex-wrap: wrap;
    flex-wrap: wrap;
  }
  .terms, .archives {
    padding: 0;
  }
}

@media print {
  .site-header, .site-header-bottom, .toc, .site-footer, .pager, .disqus-comments, .article-share {
    display: none;
  }
  .main, .breadcrumb {
    width: 100%;
    box-sizing: border-box;
  }
  
}


/* === sharingbuttons.io start === */
.resp-sharing-button__link,
.resp-sharing-button__icon {
  display: inline-block
}

.resp-sharing-button__link {
  text-decoration: none;
  color: #fff;
  margin: 0.5em
}

.resp-sharing-button {
  border-radius: 5px;
  transition: 25ms ease-out;
  padding: 0.5em 0.75em;
  font-family: Helvetica Neue,Helvetica,Arial,sans-serif
}

.resp-sharing-button__icon svg {
  width: 1em;
  height: 1em;
  margin-right: 0.4em;
  vertical-align: top
}

.resp-sharing-button--small svg {
  margin: 0;
  vertical-align: middle
}

/* Non solid icons get a stroke */
.resp-sharing-button__icon {
  stroke: #fff;
  fill: none
}

/* Solid icons get a fill */
.resp-sharing-button__icon--solid,
.resp-sharing-button__icon--solidcircle {
  fill: #fff;
  stroke: none
}

.resp-sharing-button--twitter {
  background-color: #55acee
}

.resp-sharing-button--twitter:hover {
  background-color: #2795e9
}

.resp-sharing-button--bluesky {
  background-color: #1185FE
}

.resp-sharing-button--bluesky:hover {
  background-color: #252b37
}

.resp-sharing-button--pinterest {
  background-color: #bd081c
}

.resp-sharing-button--pinterest:hover {
  background-color: #8c0615
}

.resp-sharing-button--facebook {
  background-color: #3b5998
}

.resp-sharing-button--facebook:hover {
  background-color: #2d4373
}

.resp-sharing-button--tumblr {
  background-color: #35465C
}

.resp-sharing-button--tumblr:hover {
  background-color: #222d3c
}

.resp-sharing-button--reddit {
  background-color: #5f99cf
}

.resp-sharing-button--reddit:hover {
  background-color: #3a80c1
}

.resp-sharing-button--google {
  background-color: #dd4b39
}

.resp-sharing-button--google:hover {
  background-color: #c23321
}

.resp-sharing-button--linkedin {
  background-color: #0077b5
}

.resp-sharing-button--linkedin:hover {
  background-color: #046293
}

.resp-sharing-button--email {
  background-color: #777
}

.resp-sharing-button--email:hover {
  background-color: #5e5e5e
}

.resp-sharing-button--xing {
  background-color: #1a7576
}

.resp-sharing-button--xing:hover {
  background-color: #114c4c
}

.resp-sharing-button--whatsapp {
  background-color: #25D366
}

.resp-sharing-button--whatsapp:hover {
  background-color: #1da851
}

.resp-sharing-button--hackernews {
background-color: #FF6600
}
.resp-sharing-button--hackernews:hover, .resp-sharing-button--hackernews:focus {   background-color: #FB6200 }

.resp-sharing-button--vk {
  background-color: #507299
}

.resp-sharing-button--vk:hover {
  background-color: #43648c
}

.resp-sharing-button--facebook {
  background-color: #3b5998;
  border-color: #3b5998;
}

.resp-sharing-button--facebook:hover,
.resp-sharing-button--facebook:active {
  background-color: #2d4373;
  border-color: #2d4373;
}

.resp-sharing-button--twitter {
  background-color: #55acee;
  border-color: #55acee;
}

.resp-sharing-button--twitter:hover,
.resp-sharing-button--twitter:active {
  background-color: #2795e9;
  border-color: #2795e9;
}

.resp-sharing-button--x {
  background-color: #000000;
  border-color: #000000;
}

.resp-sharing-button--x:hover,
.resp-sharing-button--x:active {
  background-color: #505050;
  border-color: #505050;
}

.resp-sharing-button--bluesky {
  background-color: #1185FE;
  border-color: #1185FE;
}

.resp-sharing-button--bluesky:hover,
.resp-sharing-button--bluesky:active {
  background-color: #0675DE;
  border-color: #0675DE;
}

/* === sharingbuttons.io end === */