body::before {
    background-size: cover;
    background-attachment: fixed;
    content: '';
    will-change: transform;
    z-index: -1;
    left: 0;
    right: 0;
    bottom: 0;
    top: 0;
    position: fixed;
}
@media (max-width: 512px)  and (-webkit-min-device-pixel-ratio: 1.5),
       (max-width: 512px)  and (min-resolution: 1.5dppx),
       (max-width: 1024px) and (-webkit-max-device-pixel-ratio: 1.5),
       (max-width: 1024px) and (max-resolution: 1.5dppx) {
}
@media (min-width: 513px)  and (max-width: 1024px) and (-webkit-min-device-pixel-ratio: 1.5),
       (min-width: 513px)  and (max-width: 1024px) and (min-resolution: 1.5dppx),
       (min-width: 1025px) and (max-width: 2048px) and (-webkit-max-device-pixel-ratio: 1.5),
       (min-width: 1025px) and (max-width: 2048px) and (max-resolution: 1.5dppx)  {
}
@media (min-width: 1025px) and (-webkit-min-device-pixel-ratio: 1.5),
       (min-width: 1025px) and (min-resolution: 1.5dppx),
       (min-width: 2049px) and (-webkit-max-device-pixel-ratio: 1.5),
       (min-width: 2049px) and (max-resolution: 1.5dppx) {
}
body .blog {
  font-family: 'Roboto', 'Helvetica', sans-serif;
  background-image: url('https://raw.githubusercontent.com/zMingGit/images/master/blog/bg.webp');
}

.blog .blog__posts {
  max-width: 1200px;
  padding: 0;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  width: 100%;
  margin: 0 auto;
  -webkit-flex-shrink: 0;
      -ms-flex-negative: 0;
          flex-shrink: 0;
}

.blog.mdl-layout .mdl-layout__content {
  padding-top: 230px;
  position: relative;
  -webkit-overflow-scrolling: touch;
}
.blog .mdl-card {
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-flex-direction: column;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-align-items: stretch;
      -ms-flex-align: stretch;
          align-items: stretch;
  min-height: 360px;
}
.blog .mdl-card__title {
  padding: 16px;
  -webkit-flex-grow: 1;
      -ms-flex-positive: 1;
          flex-grow: 1;
}
.blog .mdl-card__media {
  box-sizing: border-box;
  background-size: cover;
  padding: 24px;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-flex-grow: 1;
      -ms-flex-positive: 1;
          flex-grow: 1;
  -webkit-flex-direction: row;
      -ms-flex-direction: row;
          flex-direction: row;
  -webkit-align-items: flex-end;
      -ms-flex-align: end;
          align-items: flex-end;
  cursor: pointer;
}
.blog .mdl-card__media a,
.blog .mdl-card__title a {
  color: inherit;
}
.blog .mdl-card__supporting-text {
  width: 100%;
  padding: 16px;
  min-height: 64px;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-align-items: center;
      -ms-flex-align: center;
          align-items: center;
}
.blog .mdl-card__supporting-text strong {
  font-weight: 400;
}
.blog .mdl-card__media ~ .mdl-card__supporting-text {
  min-height: 64px;
}
.blog .mdl-card__supporting-text:not(:last-child) {
  box-sizing: border-box;
  min-height: 76px;
}
.blog:not(.blog--blogpost) .mdl-card__supporting-text ~ .mdl-card__supporting-text {
  border-top: 1px solid rgba(0,0,0,0.1);
}

.blog .mdl-card__actions:first-child {
  margin-left: 0;
}
.blog .meta {
  box-sizing: border-box;
  padding: 16px;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-flex-direction: row;
      -ms-flex-direction: row;
          flex-direction: row;
  -webkit-align-items: center;
      -ms-flex-align: center;
          align-items: center;
  -webkit-justify-content: flex-start;
      -ms-flex-pack: start;
          justify-content: flex-start;
  height: auto;
}
.blog .meta > .meta__favorites{
  -webkit-flex-direction: row;
      -ms-flex-direction: row;
          flex-direction: row;
  margin: 0 8px;
  font-size: 13px;
  font-weight: 500;
}
.blog .meta > .meta__favorites .material-icons {
  font-size: 2em;
  cursor: pointer;
  margin-left: 12px;
}
.blog .mdl-card .meta.meta--fill {
  -webkit-justify-content: space-between;
      -ms-flex-pack: justify;
          justify-content: space-between;
}
.blog .meta > *:first-child {
  margin-right: 16px;
}
.blog .meta > * {
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-flex-direction: column;
      -ms-flex-direction: column;
          flex-direction: column;
}
.blog.is-small-screen .blog__posts > .mdl-card.coffee-pic {
  -webkit-order: 0;
      -ms-flex-order: 0;
          order: 0;
}
.blog.is-small-screen .blog__posts > .mdl-card.something-else {
  -webkit-order: -1;
      -ms-flex-order: -1;
          order: -1;
}
.blog .coffee-pic .mdl-card__media {
  background-image: url('https://raw.githubusercontent.com/zMingGit/images/master/blog/spg.webp');
}
.blog .something-else .mdl-card__media {
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-flex-direction: column;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-justify-content: center;
      -ms-flex-pack: center;
          justify-content: center;
  -webkit-align-items: center;
      -ms-flex-align: center;
          align-items: center;
}
.blog .something-else > button {
  position: absolute;
  top: 0;
  right: 28px;
  -webkit-transform: translate(0px, -28px);
          transform: translate(0px, -28px);
}
.blog .something-else .mdl-card__media {
  font-size: 13px;
  font-weight: 500;
  border-top-left-radius: 2px;
  border-top-right-radius: 2px;
}
.blog .something-else .mdl-card__media img {
  width: 64px;
  height: 64px;
  margin-bottom: 10px;
}
.blog .something-else .mdl-card__supporting-text {
  background-color: #F5F5F5;
  border-bottom-left-radius: 2px;
  border-bottom-right-radius: 2px;
}
.blog .blog__posts > .demo-nav {
  margin: 12px 15px;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-flex-direction: row;
      -ms-flex-direction: row;
          flex-direction: row;
  -webkit-justify-content: space-between;
      -ms-flex-pack: justify;
          justify-content: space-between;
  -webkit-align-items: center;
      -ms-flex-align: center;
          align-items: center;
  color: white;
  font-weight: 500;
}
.blog .blog__posts > .demo-nav > .demo-nav__button {
  color: white;
  text-decoration: none;
}
.blog .blog__posts > .demo-nav .mdl-button {
  color: rgba(0,0,0,0.54);
  background-color: white;
}
.blog .blog__posts > .demo-nav > .demo-nav__button:first-child .mdl-button {
  margin-right: 16px;
}
.blog .blog__posts > .demo-nav > .demo-nav__button:last-child .mdl-button {
  margin-left: 16px;
}
.blog .mdl-card > a {
  color: inherit;
  text-decoration: none;
  font-weight: inherit;
}
.blog .mdl-card h3 {
  margin: 0;
}
.blog .mdl-card h3 a {
  text-decoration: none;
}
.blog .mdl-card h3.quote:before, .blog .mdl-card h3.quote:after {
  display: block;
  font-size: 3em;
  margin-top: 0.5em;
}
.blog .mdl-card h3.quote:before {
  content: '“';
}
.blog .mdl-card h3.quote:after {
  content: '”';
}
.blog--blogpost .custom-header {
  background-color: transparent;
}
.blog--blogpost .blog__posts > .mdl-card .mdl-card__media {
  height: 280px;
}
.blog--blogpost .comments {
}
.blog--blogpost .meta > * {
  -webkit-align-items: center;
      -ms-flex-align: center;
          align-items: center;
}
.blog--blogpost .meta + .mdl-card__supporting-text {
  border: 0;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-flex-direction: column;
      -ms-flex-direction: column;
          flex-direction: column;
}
.blog--blogpost .meta + .mdl-card__supporting-text p {
  max-width: 512px;
  margin: 16px auto;
  font-size: 16px;
  line-height: 28px;
}

.blog--blogpost .comments {
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-flex-direction: column;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-justify-content: flex-start;
      -ms-flex-pack: start;
          justify-content: flex-start;
  -webkit-align-items: stretch;
      -ms-flex-align: stretch;
          align-items: stretch;
  padding: 32px;
  box-sizing: border-box;
}
.blog--blogpost .comments > div {
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-flex-direction: row;
      -ms-flex-direction: row;
          flex-direction: row;
  margin-bottom: 16px;
}
.blog--blogpost .comments > div .mdl-textfield {
  -webkit-flex-grow: 1;
      -ms-flex-positive: 1;
          flex-grow: 1;
  margin-right: 16px;
  width: 50%;
  color: rgb(97, 97, 97);
}
/* Workaround for Firefox.
 * User agent stylesheet kept overwriting the font in FF only.
 */
.blog--blogpost .comments > div .mdl-textfield .mdl-textfield__input {
  font-family: 'Roboto', 'Helvetica', sans-serif;
}
.blog--blogpost .comments > div .mdl-textfield input,
.blog--blogpost .comments > div .mdl-textfield textarea {
  resize: none;
}
.blog--blogpost .comments > div .mdl-textfield .resize {
  resize: vertical;
}
.blog--blogpost .comments > div button {
  margin-top: 20px;
  background-color: rgba(0, 0, 0, 0.24);
  color: white;
  width: 20px;
}
.blog--blogpost .comments .comment {
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-flex-direction: column;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-align-items: stretch;
      -ms-flex-align: stretch;
          align-items: stretch;
}
.blog--blogpost .comments .comment > div  {
  margin: 10px;
}
.blog--blogpost .comments .comment > div > .comment__header {
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-flex-direction: row;
      -ms-flex-direction: row;
          flex-direction: row;
  -webkit-align-items: center;
      -ms-flex-align: center;
          align-items: center;
}
.blog--blogpost .comments .comment > div > .comment__header > .comment__author {
  -webkit-flex-grow: 1;
      -ms-flex-positive: 1;
          flex-grow: 1;
  font-size: 22px;
  padding: 5px;
  color: #f44336;
}
.blog--blogpost .comments .comment > div > .comment__header > .comment__time {
  font-size: 20px;
  color: #00695c;
}
.blog--blogpost .comments .comment > div > .comment__text {
  line-height: 1.5em;
  font-size: 18px;
  color: #ab47bc;
}
.blog--blogpost .comments .comment > .comment__actions {
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-flex-direction: row;
      -ms-flex-direction: row;
          flex-direction: row;
  -webkit-justify-content: flex-start;
      -ms-flex-pack: start;
          justify-content: flex-start;
  -webkit-align-items: center;
      -ms-flex-align: center;
          align-items: center;
  font-size: 0.8em;
  margin-top: 16px;
}
.blog--blogpost .comments .comment > .comment__actions button {
  margin-right: 16px;
  color: rgba(0, 0, 0, 0.24);
}
.blog--blogpost .comments .comment > .comment__answers {
  padding-top: 32px;
  padding-left: 48px;
}

.blog--blogpost .demo-back {
  position: absolute;
  top: 16px;
  left: 16px;
  color: white;
  z-index: 9999;
}
.blog .section-spacer {
  -webkit-flex-grow: 1;
      -ms-flex-positive: 1;
          flex-grow: 1;
}
.blog .something-else {
  overflow: visible;
  z-index: 10;
}
.blog .amazing .mdl-card__title {
  background-color: #263238;
}
.blog .minilogo {
  width: 44px;
  height: 44px;
  background-image: url('https://raw.githubusercontent.com/zMingGit/images/master/blog/avatar.webp');
  background-position: center;
  background-repeat: no-repeat;
  background-size: 50%;
  border-radius: 22px;
  background-color: #F5F5F5;
}

/* Fixes for IE 10 */
.mdl-grid {
  display: -webkit-flex !important;
  display: -ms-flexbox !important;
  display: flex !important;
}

.social-btn {
  background-position: center;
  background-size: contain;
  background-repeat: no-repeat;
  background-color: transparent;
  margin: 0 16px;
  width: 24px;
  height: 24px;
  cursor: pointer;
  opacity: 0.46;
  border-radius: 2px;
}
.social-btn__twitter {
  background-image: url('https://raw.githubusercontent.com/zMingGit/images/master/blog/twitter.webp');
}
.social-btn__blogger {
  background-image: url('https://raw.githubusercontent.com/zMingGit/images/master/blog/fackbook.webp');
}
.social-btn__gplus {
  background-image: url('https://raw.githubusercontent.com/zMingGit/images/master/blog/gplush.webp');
}
.social-btn__share {
  color: rgba(0, 0, 0, 0.54);
  background: transparent;
}

.blog .mdl-mini-footer {
  margin-top: 80px;
  height: 120px;
  padding: 40px;
  -webkit-align-items: center;
      -ms-flex-align: center;
          align-items: center;
  background-color: white;
  box-sizing: border-box;
}

.article_context {
    padding: 60px 70px 100px 70px;
}
.codehilite .hll { background-color: #ffffcc }
.codehilite  { background: #f8f8f8; }
.codehilite .c { color: #408080; font-style: italic } /* Comment */
.codehilite .err { border: 1px solid #FF0000 } /* Error */
.codehilite .k { color: #008000; font-weight: bold } /* Keyword */
.codehilite .o { color: #666666 } /* Operator */
.codehilite .ch { color: #408080; font-style: italic } /* Comment.Hashbang */
.codehilite .cm { color: #408080; font-style: italic } /* Comment.Multiline */
.codehilite .cp { color: #BC7A00 } /* Comment.Preproc */
.codehilite .cpf { color: #408080; font-style: italic } /* Comment.PreprocFile */
.codehilite .c1 { color: #408080; font-style: italic } /* Comment.Single */
.codehilite .cs { color: #408080; font-style: italic } /* Comment.Special */
.codehilite .gd { color: #A00000 } /* Generic.Deleted */
.codehilite .ge { font-style: italic } /* Generic.Emph */
.codehilite .gr { color: #FF0000 } /* Generic.Error */
.codehilite .gh { color: #000080; font-weight: bold } /* Generic.Heading */
.codehilite .gi { color: #00A000 } /* Generic.Inserted */
.codehilite .go { color: #888888 } /* Generic.Output */
.codehilite .gp { color: #000080; font-weight: bold } /* Generic.Prompt */
.codehilite .gs { font-weight: bold } /* Generic.Strong */
.codehilite .gu { color: #800080; font-weight: bold } /* Generic.Subheading */
.codehilite .gt { color: #0044DD } /* Generic.Traceback */
.codehilite .kc { color: #008000; font-weight: bold } /* Keyword.Constant */
.codehilite .kd { color: #008000; font-weight: bold } /* Keyword.Declaration */
.codehilite .kn { color: #008000; font-weight: bold } /* Keyword.Namespace */
.codehilite .kp { color: #008000 } /* Keyword.Pseudo */
.codehilite .kr { color: #008000; font-weight: bold } /* Keyword.Reserved */
.codehilite .kt { color: #B00040 } /* Keyword.Type */
.codehilite .m { color: #666666 } /* Literal.Number */
.codehilite .s { color: #BA2121 } /* Literal.String */
.codehilite .na { color: #7D9029 } /* Name.Attribute */
.codehilite .nb { color: #008000 } /* Name.Builtin */
.codehilite .nc { color: #0000FF; font-weight: bold } /* Name.Class */
.codehilite .no { color: #880000 } /* Name.Constant */
.codehilite .nd { color: #AA22FF } /* Name.Decorator */
.codehilite .ni { color: #999999; font-weight: bold } /* Name.Entity */
.codehilite .ne { color: #D2413A; font-weight: bold } /* Name.Exception */
.codehilite .nf { color: #0000FF } /* Name.Function */
.codehilite .nl { color: #A0A000 } /* Name.Label */
.codehilite .nn { color: #0000FF; font-weight: bold } /* Name.Namespace */
.codehilite .nt { color: #008000; font-weight: bold } /* Name.Tag */
.codehilite .nv { color: #19177C } /* Name.Variable */
.codehilite .ow { color: #AA22FF; font-weight: bold } /* Operator.Word */
.codehilite .w { color: #bbbbbb } /* Text.Whitespace */
.codehilite .mb { color: #666666 } /* Literal.Number.Bin */
.codehilite .mf { color: #666666 } /* Literal.Number.Float */
.codehilite .mh { color: #666666 } /* Literal.Number.Hex */
.codehilite .mi { color: #666666 } /* Literal.Number.Integer */
.codehilite .mo { color: #666666 } /* Literal.Number.Oct */
.codehilite .sa { color: #BA2121 } /* Literal.String.Affix */
.codehilite .sb { color: #BA2121 } /* Literal.String.Backtick */
.codehilite .sc { color: #BA2121 } /* Literal.String.Char */
.codehilite .dl { color: #BA2121 } /* Literal.String.Delimiter */
.codehilite .sd { color: #BA2121; font-style: italic } /* Literal.String.Doc */
.codehilite .s2 { color: #BA2121 } /* Literal.String.Double */
.codehilite .se { color: #BB6622; font-weight: bold } /* Literal.String.Escape */
.codehilite .sh { color: #BA2121 } /* Literal.String.Heredoc */
.codehilite .si { color: #BB6688; font-weight: bold } /* Literal.String.Interpol */
.codehilite .sx { color: #008000 } /* Literal.String.Other */
.codehilite .sr { color: #BB6688 } /* Literal.String.Regex */
.codehilite .s1 { color: #BA2121 } /* Literal.String.Single */
.codehilite .ss { color: #19177C } /* Literal.String.Symbol */
.codehilite .bp { color: #008000 } /* Name.Builtin.Pseudo */
.codehilite .fm { color: #0000FF } /* Name.Function.Magic */
.codehilite .vc { color: #19177C } /* Name.Variable.Class */
.codehilite .vg { color: #19177C } /* Name.Variable.Global */
.codehilite .vi { color: #19177C } /* Name.Variable.Instance */
.codehilite .vm { color: #19177C } /* Name.Variable.Magic */
.codehilite .il { color: #666666 } /* Literal.Number.Integer.Long */