html{font-family:Monaco, Helvetica, Tahoma, Arial, STXihei, "华文细黑", "Microsoft YaHei", "微软雅黑", SimSun, "宋体", Heiti, "黑体", sans-serif}::-webkit-selection{background:#fffac4;color:#111;text-shadow:none}::-moz-selection{background:#fffac4;color:#111;text-shadow:none}::-ms-selection{background:#fffac4;color:#111;text-shadow:none}::selection{background:#fffac4;color:#111;text-shadow:none}@-webkit-keyframes pulse{to{opacity:0;-webkit-transform:scale(1);transform:scale(1)}}@keyframes pulse{to{opacity:0;-webkit-transform:scale(1);transform:scale(1)}}@-webkit-keyframes twinkle{to{opacity:0}}@keyframes twinkle{to{opacity:0}}header{display:-webkit-box;display:-ms-flexbox;display:flex;display:-webkit-flex;-webkit-box-orient:vertical;-webkit-box-direction:normal;-ms-flex-direction:column;flex-direction:column;-webkit-box-pack:center;-ms-flex-pack:center;justify-content:center;margin:30px 0 0;padding:0 30px}header a{color:#111;text-decoration:none;-webkit-transition:all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);transition:all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);font-size:2em;font-weight:bold}header a::before{-webkit-animation:twinkle 1s linear infinite;animation:twinkle 1s linear infinite;content:"";display:block;position:absolute;bottom:0;left:0;width:100%;height:2px;background:#ffea00}.title{position:relative;display:inline-block;margin:30px auto 30px;padding:0;color:#111;font-size:112.5%;text-align:center}.title .title-tip{visibility:hidden;width:85px;background-color:#555;color:#fff;text-align:center;border-radius:6px;padding:5px 0;position:absolute;z-index:1;top:5px;right:120%;opacity:0;-webkit-transition:opacity 0.3s;transition:opacity 0.3s}@media (max-width: 415px){header a{font-size:1.7em}}@media (min-width: 769px){.title .title-tip::after{content:"";position:absolute;top:50%;left:100%;margin-top:-5px;border-width:5px;border-style:solid;border-color:transparent transparent transparent #555}.title:hover .title-tip{visibility:visible;opacity:1}}.page-content{width:100%;text-align:justify;-webkit-box-flex:1;-ms-flex:1;flex:1}.page-content p{color:#666;font-size:18px;line-height:1.8;margin:0 0 30px}.page-content a{text-decoration:none;color:#1976D2;border-bottom:1px dashed #1976D2;-webkit-transition:all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);transition:all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1)}.page-content a:hover{color:#111;border-bottom:2px solid #ffea00}.content{max-width:840px;margin:0 auto;padding:0 30px}.content div[class*="language-"]{margin-bottom:30px}twitterwidget{margin:10px auto 40px !important}iframe,embed{margin-bottom:15px;max-width:100%}.licenses{margin-top:60px}.licenses p{text-align:center}a[class="gitment-header-issue-link"],a[class="gitment-editor-avatar"],a[class="gitment-editor-login-link"],a[class="gitment-editor-footer-tip"],a[class="gitment-footer-project-link"],a[class="gitment-comment-name"]{border-bottom:none !important}a[class="gitment-header-issue-link"]:hover,a[class="gitment-editor-avatar"]:hover,a[class="gitment-editor-login-link"]:hover,a[class="gitment-editor-footer-tip"]:hover,a[class="gitment-footer-project-link"]:hover,a[class="gitment-comment-name"]:hover{border-bottom:none !important}ul[class="gitment-comments-list"] li{font-size:1em}.reward{text-align:center}.reward p{color:#999;margin:30px 0 10px 0}.reward-qr-code{display:-webkit-box;display:-ms-flexbox;display:flex;display:-webkit-flex;-webkit-box-orient:vertical;-webkit-box-direction:normal;-ms-flex-direction:row;flex-direction:row}.reward-qr-code img{width:200px;height:200px;margin:0 40px}.alipay,.wechat{display:inline-block}.alipay span,.wechat span{display:block;font-size:18px;font-weight:bold;color:#1CA9E6;margin:20px 0}.wechat span{color:#1BB823}#btn-show-reward{text-align:center}#btn-show-reward div{display:inline-block;width:50px;height:50px;border-radius:50%;color:#fff;cursor:pointer;font-size:1.5em;line-height:50px;text-align:center;background:#FFD740}#btn-show-comment{text-align:center}#btn-show-comment div{display:inline-block;padding:5px 10px;color:#999;cursor:pointer;font-size:18px;border:1px solid #999;border-radius:4px}#btn-show-comment div:hover{color:#666;border:1px solid #666}@media (max-width: 415px){.page-content p{font-size:1em;line-height:1.7}.content{padding:0 20px}iframe,embed{height:auto}.alipay span,.wechat span,.wechat span{font-size:1em}#btn-show-reward div{width:40px;height:40px;font-size:1.2em;line-height:40px}#btn-show-comment div{font-size:1em;border:1px solid #999}}footer a{text-decoration:none}.copyright{text-align:center;padding:50px 20px 20px 20px}.copyright p{color:#999;font-size:1em}.copyright a{color:#999;border-bottom:1px dashed #999;-webkit-transition:all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);transition:all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1)}.copyright a:hover{color:#111;border-bottom:2px solid #ffea00}@media (max-width: 415px){.copyright{padding:20px}.copyright p{font-size:0.7em;line-height:1.7}}html{text-rendering:optimizeLegibility;text-align:justify}body{display:-webkit-box;display:-ms-flexbox;display:flex;display:-webkit-flex;-webkit-box-orient:vertical;-webkit-box-direction:normal;-ms-flex-direction:column;flex-direction:column;max-width:840px;min-height:100vh;height:auto;margin:0 auto;background:#ffffff}a{text-decoration:none;-webkit-tap-highlight-color:transparent}.header{display:-webkit-box;display:-ms-flexbox;display:flex;display:-webkit-flex;-webkit-box-orient:vertical;-webkit-box-direction:normal;-ms-flex-direction:row;flex-direction:row;-webkit-box-pack:space-evenly;-ms-flex-pack:space-evenly;justify-content:space-evenly;-ms-flex-wrap:wrap;flex-wrap:wrap;padding:20px;margin:40px 0 60px}.header a{color:#111;font-size:1.5em;border-bottom:2px dashed #111;-webkit-transition:all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);transition:all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1)}.article-content{-webkit-box-flex:1;-ms-flex:1;flex:1}.article-block{padding:0 20px;-webkit-transition:all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);transition:all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1)}.article-header{display:-webkit-box;display:-ms-flexbox;display:flex;display:-webkit-flex;-webkit-box-orient:vertical;-webkit-box-direction:normal;-ms-flex-direction:row;flex-direction:row;-webkit-box-align:center;-ms-flex-align:center;align-items:center;-webkit-box-pack:justify;-ms-flex-pack:justify;justify-content:space-between}@media (min-width: 769px){.header a:hover{color:#111;-webkit-transform:scale(1.05);transform:scale(1.05);border-bottom:2px solid #ffea00}.article-header:hover .article-title{border-bottom:2px solid #ffea00}}.article-title{color:#111;font-size:1.3em;border-bottom:2px solid #ffffff}.article-date{color:#666;font-size:0.9em}.article-excerpt{margin-bottom:40px}.article-excerpt p{margin:0;color:#666;font-size:1em;line-height:1.6em}@media (max-width: 415px){.header{margin:0 0 20px 0;-webkit-box-pack:justify;-ms-flex-pack:justify;justify-content:space-between}.header a{font-size:.88em}.article-header{display:-webkit-box;display:-ms-flexbox;display:flex;display:-webkit-flex;-webkit-box-orient:vertical;-webkit-box-direction:normal;-ms-flex-direction:column;flex-direction:column;-webkit-box-align:start;-ms-flex-align:start;align-items:flex-start}.article-title{font-size:1.2em;margin:auto auto 0 0}.article-date{font-size:.9em}.article-excerpt p{font-size:.9em}}