body {
  background: #e5ebeb;
  font-family: san-serif; }

a {
  color: #3081b9; }

header {
  background: #00a39e;
  color: #fff;
  text-align: center;
  padding: 2em 0 1em; }
  header a {
    color: #fff;
    text-decoration: none;
    display: inline-block; }

#title p {
  max-width: 1000px;
  margin: 0 auto; }

#social {
  max-width: 1000px;
  margin: 0 auto; }

#contents {
  padding: 2em 0 0; }
  #contents h1 {
    max-width: 1000px;
    margin: 0 auto;
    font-size: 1.6em;
    margin-bottom: 0.6em; }
  #contents article .index {
    max-width: 940px;
    margin: 0 auto; }
    #contents article .index ul, #contents article .index li {
      list-style: none;
      margin: 0;
      padding: 0; }
    #contents article .index li {
      width: 30%;
      margin: 0 1% 20px;
      box-sizing: border-box;
      display: inline-block;
      text-align: center; }
      #contents article .index li a {
        background: #f6f6f6;
        transition: all 0.3s;
        box-shadow: 0 0 6px rgba(0, 0, 0, 0.1);
        padding: 2em;
        padding: 1.5rem 2rem 3.5rem;
        text-decoration: none;
        display: block;
        font-weight: bold; }
        #contents article .index li a:hover {
          background: #fff;
          box-shadow: 0 0 12px rgba(0, 0, 0, 0.2); }
      #contents article .index li i.icon {
        font-size: 4rem;
        display: block; }
      #contents article .index li span.ico img {
        width: auto;
        height: 64px;
        display: block;
        margin: 0 auto; }
      #contents article .index li button {
        background: #4c9ad0;
        color: #fff;
        border: 0;
        border-top: 2px solid rgba(255, 255, 255, 0.4);
        border-bottom: 2px solid rgba(0, 0, 0, 0.2);
        border-radius: 3px;
        padding: 0.2rem 0.8rem;
        margin: -2.5rem auto 1rem;
        display: block;
        cursor: pointer;
        transition: all 0.3s; }
        #contents article .index li button i {
          display: inline;
          font-size: 0.8rem;
          margin-left: 0.2rem; }
        #contents article .index li button:hover {
          background: #2b73a4;
          box-shadow: 0 0 12px rgba(0, 0, 0, 0.2); }
        #contents article .index li button.subscribed {
          background: #999; }
        #contents article .index li button.subscribed:hover {
          background: #666; }
    #contents article .index p {
      margin: 20px 1%; }
  #contents article .content {
    background: #f6f6f6;
    transition: all 0.3s;
    box-shadow: 0 0 6px rgba(0, 0, 0, 0.1);
    padding: 2em;
    max-width: 940px;
    margin: 0 auto; }
    #contents article .content p, #contents article .content ul, #contents article .content ol, #contents article .content h2, #contents article .content h3 {
      margin-bottom: 1em; }
    #contents article .content h2 {
      border-left: 5px solid #000;
      padding: 0.2em 0.5em;
      margin-top: 1.5em; }
    #contents article .content pre {
      background: #f2f2f2;
      padding: 1.5em;
      margin-bottom: 2em;
      overflow: auto; }
    #contents article .content code {
      font-family: 'PT Mono';
      line-height: 1.4; }
    #contents article .content li {
      margin-bottom: 0.5em; }
    #contents article .content ol {
      border: 1px solid #666;
      padding: 1em 0.5em 0.5em 2.8em;
      margin-left: 0; }
  #contents .pager {
    text-align: center;
    margin-top: 1em; }
    #contents .pager a {
      color: #666; }

.title {
  background-color: #00706d;
  color: #fff;
  width: 100%;
  margin-bottom: 1rem; }
  .title h1 {
    max-width: 920px;
    margin: 0 auto;
    padding: 0 0.5rem; }
    .title h1 a {
      color: rgba(255, 255, 255, 0.6);
      transition: 0.3s;
      margin-right: 0.3rem;
      padding: 0.8rem 0.5rem;
      display: inline-block; }
      .title h1 a:hover {
        color: rgba(255, 255, 255, 0.4); }
    .title h1 i {
      margin-right: 0.5rem; }
    .title h1 span img {
      width: auto;
      height: 24px;
      margin-right: 0.5rem;
      vertical-align: middle; }

#category {
  max-width: 940px;
  margin: 0 auto 40px; }
  #category i {
    margin-right: 0.5rem; }
  #category .wrap .list {
    margin: 0 40px; }
    #category .wrap .list > li {
      background: #f6f6f6;
      transition: all 0.3s;
      box-shadow: 0 0 6px rgba(0, 0, 0, 0.1);
      padding: 2em;
      padding: 1.5rem 2rem;
      list-style: none;
      margin-bottom: 1rem;
      font-weight: bold;
      font-size: 1.2rem; }
      #category .wrap .list > li > ul {
        margin-top: 1rem;
        font-weight: normal;
        list-style: disc;
        font-size: 1rem; }

#help {
  max-width: 800px;
  margin: 0 auto;
  padding: 2em 2em 4em;
  color: #666; }
  #help dl {
    background: #f2f2f2;
    border: 1px solid #ccc;
    padding: 1.3rem 1.5rem 0.8rem;
    box-sizing: border-box; }
    #help dl dt {
      font-weight: bold; }
      #help dl dt i {
        font-size: 1.2rem;
        padding-right: 0.3rem; }
    #help dl dd {
      margin-bottom: 1rem;
      padding-left: 1.5rem; }

footer {
  background: #00a39e;
  color: #fff;
  text-align: center;
  padding: 30px 15px 15px; }
  footer h1 {
    font-size: 1.1rem;
    margin-bottom: 30px; }
    footer h1 a {
      color: #fff; }
  footer .text a {
    color: #fcee21; }
  footer .copyright {
    font-size: 0.8rem;
    margin-top: 30px; }

@media screen and (max-width: 450px) {
  body {
    font-size: 14px; }

  header h1 {
    font-size: 1.4rem; }

  #contents {
    padding-top: 1px;
    margin-bottom: 3rem; }
    #contents article .index li {
      display: block;
      width: 100%;
      text-align: left;
      font-size: 1.1rem; }
      #contents article .index li a {
        padding: 1.2rem 0.5rem; }
        #contents article .index li a i.icon, #contents article .index li a span.ico {
          float: left;
          font-size: 2rem;
          width: 3.5rem;
          text-align: center;
          margin-top: -0.3rem; }
        #contents article .index li a span.ico img {
          width: auto;
          height: 32px; }
      #contents article .index li button {
        margin: 0 auto 1rem;
        position: relative;
        padding: 0.5rem 1rem; }
        #contents article .index li button::before {
          width: 0;
          height: 0;
          border: 5px solid transparent;
          border-top: 5px solid #fff;
          display: block;
          content: "";
          position: absolute;
          top: -2px;
          left: 50%;
          margin-left: -3px; }

  #category .wrap .list {
    margin: 0; }
    #category .wrap .list > li {
      padding: 0.8rem 1.2rem; }
      #category .wrap .list > li > ul {
        margin-left: 1.4rem; }
        #category .wrap .list > li > ul > li {
          margin-bottom: 0.5rem; }

  #help {
    padding: 0 16px;
    margin-bottom: 1rem; }
    #help dl {
      padding: 0.6rem; }
      #help dl dt {
        font-size: 0.9rem; }
        #help dl dt i {
          font-size: 1rem; }
      #help dl dd {
        font-size: 0.8rem;
        padding-left: 0; }
        #help dl dd:last-child {
          margin-bottom: 0; }

  footer {
    text-align: left;
    font-size: 0.8rem; }
    footer h1 {
      font-size: 0.9rem;
      margin-bottom: 0.8rem; } }