:root{--red:#da536e;--orange:#ed6d46;--green:#79c06e;--blue:#68a4d9;--body-background-color:#fff;--primary-color:#2cb4ad;--secondary-color:#dc6b9a;--positive:rgba(91,189,114,.2);--negative:rgba(217,92,92,.2);--mark:rgba(255,255,0,.2);--text:#24292e;--light_text:#fef4e9;--link:#4496d3;--code:#7b59c0}@font-face{font-display:optional;font-display:block;font-family:icomoon;font-style:normal;font-weight:400;src:url(/fonts/icomoon.woff?7pbdp4) format("woff"),url(/fonts/icomoon.svg?7pbdp4#icomoon) format("svg")}[class*=" icon-"],[class^=icon-]{speak:never;font-feature-settings:normal;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:icomoon!important;font-style:normal;font-variant:normal;font-weight:400;line-height:1;text-transform:none}.icon-windows:before{content:"\e90b"}.icon-tag:before{content:"\e90c"}.icon-repeat:before,.icon-rotate-right:before{content:"\e90d"}.icon-clock-o:before{content:"\e90e"}.icon-angle-double-right:before{content:"\e90f"}.icon-angle-double-left:before{content:"\e910"}.icon-folder:before{content:"\e911"}.icon-feed:before,.icon-rss:before{content:"\e912"}.icon-twitter:before{content:"\e913"}.icon-facebook:before{content:"\e914"}.icon-get-pocket:before{content:"\e915"}.icon-eye:before{content:"\e900"}.icon-times-circle-o:before{content:"\e901"}.icon-exclamation-circle:before{content:"\e902"}.icon-info-circle:before{content:"\e903"}.icon-lightbulb-o:before{content:"\e904"}.icon-table:before{content:"\e905"}.icon-square-o:before{content:"\e906"}.icon-check-square-o:before{content:"\e907"}.icon-file-text-o:before{content:"\e908"}.icon-folder-o:before{content:"\e909"}.icon-external-link:before{content:"\e90a"}.hljs-comment,.hljs-quote{color:#776977}.hljs-attribute,.hljs-link,.hljs-name,.hljs-regexp,.hljs-selector-class,.hljs-selector-id,.hljs-tag,.hljs-template-variable,.hljs-variable{color:#ca402b}.hljs-built_in,.hljs-builtin-name,.hljs-literal,.hljs-meta,.hljs-number,.hljs-params,.hljs-type{color:#a65926}.hljs-bullet,.hljs-string,.hljs-symbol{color:#918b3b}.hljs-section,.hljs-title{color:#516aec}.hljs-keyword,.hljs-selector-tag{color:#7b59c0}.hljs{background:#f7f3f7;color:#695d69;display:block;overflow-x:auto;padding:.5em}.hljs-emphasis{font-style:italic}.hljs-strong{font-weight:700}*,:after,:before{box-sizing:border-box}body{-webkit-text-size-adjust:100%;text-size-adjust:100%;word-wrap:break-word;color:#24292e;color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Helvetica Neue,Yu Gothic,YuGothic,Meiryo,sans-serif;font-size:16px;line-height:1.5;margin:0;padding:0}a{background-color:transparent;color:#4496d3;color:var(--link);text-decoration:none}a:active,a:hover{outline-width:0}a:hover{text-decoration:underline}a:not([href]){color:inherit;text-decoration:none}a.external-link:after{content:" \e90a";font-family:icomoon,sans-serif}strong{font-weight:600}blockquote,dl,ol,p,pre,table,ul{margin-bottom:16px;margin-top:0}code,kbd,pre{font-family:monospace;font-size:1em}hr{background:transparent;background-color:#e1e4e8;border:0;border-bottom-color:#eee;box-sizing:content-box;height:1px;margin:24px 0;overflow:hidden;padding:0}hr:after,hr:before{content:"";display:table}hr:after{clear:both}hr.narrow{margin:3px}hr.page-break{border:0;height:0;margin:0;padding:0;page-break-after:always;visibility:hidden}input{font-family:inherit;font-size:inherit;line-height:inherit;margin:0;overflow:visible}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.25;margin-bottom:16px;margin-top:24px}h1{font-size:2em;margin:.67em 0}h1,h2{border-bottom:1px solid #dc6b9a;border-bottom:1px solid var(--secondary-color);padding-bottom:.3em}h2{font-size:1.5em}h3{font-size:1.25em}h4{font-size:1em}h5{font-size:.875em}h6{color:color-mod(#24292e alpha(40%));color:color-mod(var(--text) alpha(40%));font-size:.85em}p{margin-bottom:10px;margin-top:0}p.left-text{text-align:left}p.center-text{text-align:center}p.right-text{text-align:right}blockquote{border-left:.25em solid;border-color:#dc6b9a;border-color:var(--secondary-color);color:#6a737d;margin:0 0 16px;padding:0 1em 0 3em;position:relative}blockquote>:first-child{margin-top:0}blockquote>:last-child{margin-bottom:0}cite{quotes:"\201C" "\201D" "\2018" "\2019"}cite:before{color:#6a737d;content:open-quote}cite:after{color:#6a737d;content:close-quote}ul.index,ul.toc{list-style:none;padding:0}ul.toc .level-2{padding-left:.5em}ul.toc .level-3{padding-left:1em}ul.toc .level-4{padding-left:1.5em}ul.toc .level-5{padding-left:2em}ul.toc .level-6{padding-left:2.5em}ul{list-style:none;position:relative}ul li.checkbox-checked:before,ul li.checkbox:before,ul li.tree-file:before,ul li.tree-folder:before{font-family:icomoon,sans-serif;left:8px;position:absolute}ul li.tree-folder:before{content:"\e909"}ul li.tree-file:before{content:"\e908"}ul li.checkbox:before{content:"\e906"}ul li.checkbox-checked:before{content:"\e907"}ul li.list-item:before{content:"・"}ol,ul{margin-bottom:16px;margin-top:0;padding-left:2em}ol ol,ul ol{list-style-type:lower-roman}ol ol,ol ul,ul ol,ul ul{margin-bottom:0;margin-top:0}ol ol ol,ol ul ol,ul ol ol,ul ul ol{list-style-type:lower-alpha}li{word-wrap:break-all}li>p{margin-top:16px}li{+li{margin-top:.25em}}dl{margin-bottom:16px;margin-top:0;overflow:hidden;padding:0;word-break:break-all}dl .dl-wrapper{border-bottom:1px dashed #2cb4ad;border-bottom:1px dashed var(--primary-color);display:flex;flex-wrap:wrap}dl dt{font-size:1em;font-style:inherit;font-weight:600;margin-top:0;overflow:hidden;width:40%}dl dd,dl dt{padding:6px 13px}dl dd{margin-bottom:0;margin-left:0}table{border-collapse:collapse;border-spacing:0;display:block;margin-bottom:16px;margin-top:0;overflow:auto;width:100%}table caption:before{content:"\e905";font-family:icomoon,sans-serif;padding-right:8px}table th{font-weight:600}table tr{background-color:#fff;border-top:1px solid #c6cbd1}table tr:nth-child(2n){background-color:#f6f8fa}table td,table th{border:1px solid #dfe2e5;padding:6px 13px}table td.align-left{text-align:left}table td.align-center{text-align:center}table td.align-right{text-align:right}table td.added{background-color:rgba(91,189,114,.2);background-color:var(--positive)}table td.removed{background-color:rgba(217,92,92,.2);background-color:var(--negative)}table td.marked{background-color:rgba(255,255,0,.2);background-color:var(--mark)}img{background-color:#fff;border-style:none;box-sizing:content-box;max-width:100%}img.emoji{height:1em;margin:0 .05em 0 .1em;vertical-align:-.1em;width:1em}code{background-color:rgba(27,31,35,.05);border-radius:3px;color:#7b59c0;color:var(--code);font-size:85%;margin:0;padding:.2em .4em}code,pre{font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,Courier,monospace}pre{word-wrap:normal;font-size:12px;margin-bottom:0;margin-top:0}pre>code{background:transparent;border:0;font-size:100%;margin:0;padding:0;white-space:pre;word-break:normal}.highlight pre,pre{background-color:#f6f8fa;border-radius:3px;font-size:85%;line-height:1.45;overflow:auto;padding:16px}pre code{word-wrap:normal;background-color:transparent;border:0;display:inline;line-height:inherit;margin:0;max-width:auto;overflow:visible;padding:0}.highlight{margin-bottom:16px;position:relative}.highlight .caption{position:absolute;z-index:2}.highlight code{color:#24292e;color:var(--text)}.highlight code .added{background-color:rgba(91,189,114,.2);background-color:var(--positive);display:inline-block;width:100%}.highlight code .removed{background-color:rgba(217,92,92,.2);background-color:var(--negative);display:inline-block;width:100%}.highlight code .marked{background-color:rgba(255,255,0,.2);background-color:var(--mark);display:inline-block;width:100%}.highlight .line-numbers{border-right:1px solid #999;color:#999;left:0;margin:16px 5px;padding-right:5px;pointer-events:none;position:absolute;top:0;-webkit-user-select:none;user-select:none;width:30px;z-index:1}.highlight .line-numbers .added,.highlight .line-numbers .marked,.highlight .line-numbers .removed{font-weight:700}.highlight .line-numbers .added:before,.highlight .line-numbers .marked:before,.highlight .line-numbers .removed:before{left:0;position:absolute}.highlight .line-numbers .added{color:#79c06e;color:var(--green)}.highlight .line-numbers .added:before{content:"+"}.highlight .line-numbers .removed{color:#da536e;color:var(--red)}.highlight .line-numbers .removed:before{content:"-"}.highlight .line-numbers .marked{color:#333}.highlight .has-caption{padding-top:32px}.highlight .has-caption .line-numbers{margin-top:32px}.highlight pre{margin-bottom:0;padding-left:42px;position:relative;word-break:normal}.highlight .line-numbers>span{counter-increment:linenumber;display:block;text-align:right;width:100%}.highlight .line-numbers>span:after{content:counter(linenumber)}kbd kbd{background-color:#fafbfc;border:1px solid #d1d5da;border-bottom-color:#c6cbd1;border-radius:3px;box-shadow:inset 0 -1px 0 #c6cbd1;color:#444d56;display:inline-block;font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,Courier,monospace;font-size:11px;line-height:10px;padding:3px 5px;vertical-align:middle}mark{background-color:rgba(255,255,0,.2);background-color:var(--mark)}iframe{width:100%}.admonition{border:1px solid #dfe2e5;border-radius:3px;margin-bottom:16px;padding:0 13px 6px}.admonition :last-child{margin-bottom:6px}.admonition>.admonition-title{font-weight:700;margin:0 -13px 6px;padding:0 13px}.admonition>.admonition-title:before{font-family:icomoon,sans-serif;padding-right:5px}.admonition>.admonition-title:after{content:attr(data-text)}.admonition.tip>.admonition-title{background-color:#79c06e;background-color:var(--green);color:#fef4e9;color:var(--light_text)}.admonition.tip>.admonition-title:before{content:"\e904"}.admonition.note>.admonition-title{background-color:#68a4d9;background-color:var(--blue);color:#fef4e9;color:var(--light_text)}.admonition.note>.admonition-title:before{content:"\e903"}.admonition.warning>.admonition-title{background-color:#ed6d46;background-color:var(--orange);color:#fef4e9;color:var(--light_text)}.admonition.warning>.admonition-title:before{content:"\e902"}.admonition.danger>.admonition-title{background-color:#da536e;background-color:var(--red);color:#fef4e9;color:var(--light_text)}.admonition.danger>.admonition-title:before{content:"\e901"}.admonition.issue>.admonition-title{background-color:#68a4d9;background-color:var(--blue);color:#fef4e9;color:var(--light_text)}.mathblock{margin-bottom:16px;max-width:100%;overflow:auto;position:relative}.mathblock.has-caption{align-items:center;display:flex;flex-wrap:nowrap}.mathblock .caption{margin-left:auto;quotes:"(" ")"}.mathblock .caption:before{content:open-quote}.mathblock .caption:after{content:close-quote}.mathblock .formula{margin:auto;text-align:center}.footnote-wrapper{border-top:3px solid #eaecef}.footnote-wrapper ul{list-style:none;margin:1em;padding-left:0}.header{align-items:center;background-color:#2cb4ad;background-color:var(--primary-color);border-bottom:5px solid #dc6b9a;border-bottom:5px solid var(--secondary-color);display:flex;flex-direction:row;flex-wrap:wrap;padding:16px;width:100%}.header,.header :link,.header :visited,.header area[href]{color:#fef4e9;color:var(--light_text)}.header :any-link{color:#fef4e9;color:var(--light_text)}.footer{background-color:#2cb4ad;background-color:var(--primary-color);border-top:5px solid #dc6b9a;border-top:5px solid var(--secondary-color);padding:16px;text-align:center;width:100%}.footer,.footer :link,.footer :visited,.footer area[href]{color:#fef4e9;color:var(--light_text)}.footer :any-link{color:#fef4e9;color:var(--light_text)}.copyright{font-size:14px}.flex-right{align-items:center;display:flex;flex-direction:row;flex-wrap:wrap;margin-left:auto}.main-title{font-size:26px;font-weight:700}.wrapper{background-color:#fff;background-color:var(--body-background-color);margin:0 auto;max-width:1280px}.content-wrapper,.wrapper{width:100%}.column1,.column2{margin:0 auto;padding:16px;width:100%}@media only screen and (min-width:768px){.wrapper{margin:40px auto}.content-wrapper{overflow:hidden}.column1{float:left;max-width:65%}.column2{float:right;max-width:35%}}.widget-title{border-bottom:2px solid #2cb4ad;border-bottom:2px solid var(--primary-color);font-size:18px;font-weight:600}.index-item{list-style-type:none;margin:8px}.description{color:#585d62;font-size:14px}.breadcrumb{align-items:center;display:flex;flex-direction:row;flex-wrap:wrap}.breadcrumb-item{font-size:14px;margin:0 16px}.post-date{color:#585d62;font-size:12px;text-align:right;width:100%}.updatedAt{padding-left:8px}.categories,.tags{align-items:center;display:flex;flex-direction:row;flex-wrap:wrap}.category-item,.tag-item{font-size:14px;margin:8px}.rss{font-size:28px;padding:0 8px}.pagination{align-items:center;display:flex;flex-direction:row;flex-wrap:wrap;padding:16px}.pagination-item{padding:8px}.inline-right{text-align:right}.social-share{display:flex;flex-direction:row;flex-wrap:wrap;justify-content:center;list-style-type:none}.social-item{font-size:40px;line-height:1.2;margin:8px;text-align:center}.social-item a{color:#fff;display:inline-block;width:60px}a.facebook{background-color:#315096}a.twitter{background-color:#55acee}a.googleplus{background-color:#dd4b39}a.pocket{background-color:#ef4056}a.line{background-color:#00c300;background-image:url("data:image/svg+xml;charset=utf8,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22300px%22%20height%3D%22300px%22%20viewBox%3D%220%200%20300%20300%22%3E%20%3Cdefs%3E%20%3Cstyle%3E%20.fill_1%20%7Bfill%3A%20%2300C300%3B%7D%20.fill_2%20%7Bfill%3A%20%23fff%3B%7D%20%3C%2Fstyle%3E%20%3C%2Fdefs%3E%20%3Cg%3E%20%3Cpath%20class%3D%22fill_1%22%20d%3D%22M245.741%2C0L54.679%2C0C24.677-0.042%2C0.043%2C24.249%2C0%2C54.257v191.057%20c-0.042%2C30.01%2C24.255%2C54.645%2C54.258%2C54.686H245.32c30.01%2C0.042%2C54.637-24.249%2C54.68-54.265l-0.001-191.06%20C300.041%2C24.671%2C275.749%2C0.041%2C245.741%2C0z%22%2F%3E%20%3Cpath%20class%3D%22fill_2%22%20d%3D%22M259.877%2C136.778c0-48.99-49.115-88.846-109.482-88.846%20c-60.365%2C0-109.482%2C39.856-109.482%2C88.846c0%2C43.917%2C38.949%2C80.702%2C91.563%2C87.659c3.563%2C0.769%2C8.416%2C2.354%2C9.644%2C5.4%20c1.104%2C2.766%2C0.724%2C7.1%2C0.354%2C9.896c0%2C0-1.279%2C7.727-1.562%2C9.375c-0.476%2C2.767-2.201%2C10.823%2C9.483%2C5.901%20c11.686-4.922%2C63.047-37.127%2C86.016-63.568h-0.005C252.273%2C174.045%2C259.877%2C156.385%2C259.877%2C136.778z%20M107.537%2C165.925H85.785%20c-3.164%2C0-5.74-2.575-5.74-5.744v-43.505c0-3.166%2C2.576-5.741%2C5.74-5.741c3.166%2C0%2C5.739%2C2.576%2C5.739%2C5.741v37.764h16.013%20c3.169%2C0%2C5.741%2C2.576%2C5.741%2C5.742C113.277%2C163.35%2C110.706%2C165.925%2C107.537%2C165.925z%20M130.037%2C160.182%20c0%2C3.168-2.575%2C5.744-5.737%2C5.744c-3.164%2C0-5.739-2.575-5.739-5.744v-43.505c0-3.166%2C2.575-5.741%2C5.739-5.741%20c3.162%2C0%2C5.737%2C2.576%2C5.737%2C5.741V160.182z%20M182.402%2C160.182c0%2C2.479-1.573%2C4.667-3.924%2C5.446%20c-0.591%2C0.198-1.207%2C0.298-1.824%2C0.298c-1.791%2C0-3.505-0.858-4.587-2.298l-22.293-30.359v26.914%20c0%2C3.168-2.573%2C5.744-5.741%2C5.744c-3.166%2C0-5.742-2.575-5.742-5.744v-43.505c0-2.474%2C1.579-4.662%2C3.924-5.445%20c0.591-0.199%2C1.206-0.296%2C1.823-0.296c1.791%2C0%2C3.509%2C0.856%2C4.584%2C2.295l22.3%2C30.362v-26.917c0-3.166%2C2.578-5.741%2C5.74-5.741%20c3.167%2C0%2C5.739%2C2.576%2C5.739%2C5.741V160.182z%20M217.602%2C132.688c3.169%2C0%2C5.742%2C2.576%2C5.742%2C5.743c0%2C3.163-2.573%2C5.739-5.742%2C5.739%20h-16.008v10.27h16.008c3.164%2C0%2C5.742%2C2.576%2C5.742%2C5.742c0%2C3.168-2.578%2C5.744-5.742%2C5.744h-21.754c-3.16%2C0-5.74-2.575-5.74-5.744%20v-21.738c0-0.007%2C0-0.007%2C0-0.013v-21.755c0-3.166%2C2.575-5.741%2C5.74-5.741h21.754c3.169%2C0%2C5.742%2C2.576%2C5.742%2C5.741%20c0%2C3.166-2.573%2C5.741-5.742%2C5.741h-16.008v10.271H217.602z%22%2F%3E%20%3C%2Fg%3E%3C%2Fsvg%3E");background-size:55px}a.hatebu,a.line{background-position:50%;background-repeat:no-repeat;height:49px}a.hatebu{background-color:#008fde;background-image:url("data:image/svg+xml;base64,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");background-size:contain}.feed-item{margin:0 8px}.feedly{background-image:url("data:image/svg+xml;base64,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");background-position:50%;background-repeat:no-repeat;background-size:contain;display:block;height:40px;width:40px}@media only screen and (min-width:768px){.ad-height1{min-height:90px}.ad-height3{min-height:280px}}.product-container{display:flex;margin:8px}.product-container .product-list{margin-left:8px}.product-container .product-list .product-title{word-break:break-all}.product-container .product-list .product-link{border-color:#adb1b8 #a2a6ac #8d9096;border-radius:3px;border-style:solid;border-width:1px;box-shadow:inset 0 1px 0 hsla(0,0%,100%,.4);display:inline-block;height:40px;line-height:37px;margin:8px;padding:1px 8px;text-align:center;text-decoration:none;transition:.2s;width:210px}.product-container .product-list a.amazon{background:linear-gradient(180deg,#f7dfa5,#f0c14b);background-color:#f7dfa5;color:#24292e;color:var(--text)}.product-container .product-list a.rakuten{background-color:#bf0000;color:#fef4e9;color:var(--light_text);text-shadow:0 -1px 0 rgba(0,0,0,.4)}