*,:after,:before{font-family:inherit;background-color:inherit;color:inherit;margin:0;padding:0;box-sizing:border-box}html{font-size:calc(1em + .33vw);font-family:Arial,Helvetica Neue,sans-serif;line-height:1.5;color:#111;background-color:#fefefe}body{padding:20px 20px 60px;max-width:680px;margin:0 auto;word-break:break-word;font-feature-settings:auto,normal;font-kerning:auto;font-variant:normal;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility;-webkit-hyphens:auto;hyphens:auto}template{display:none!important}*+*{margin-top:2.25rem}.main,[hidden]+*,body,br,dd,dt,li+li,option,td,th{margin-top:0}p+p{margin-top:.75rem}a{border-bottom:1px solid}abbr{text-decoration:none;cursor:help;border-bottom:1px dashed}img{max-height:50vh}.img-link{border-bottom:none}p img{margin:.75rem 0}figure p img{margin:0}.patterns a:focus .text,:focus:not([tabindex="-1"]),[data-expands]:focus svg,[for=themer] :focus+[aria-hidden]{outline:4px solid #999}a{outline-offset:2px}.katex *{margin-top:0;background-color:transparent}[tabindex="-1"]:focus,div:not([tabindex]):focus{outline:none}[hidden]{display:none}[href="#main"]{display:block;width:100%;padding:.75rem;color:#fefefe;background:#000;position:absolute;top:-3rem;text-align:center;z-index:1}[href="#main"]:focus{top:0;outline:none}h1,h2,h3,h4{line-height:1.125}h1{font-size:2rem}h2{font-size:1.66rem}h3{font-size:1.25rem}h4,h5{font-size:1rem;font-family:PT Sans,sans-serif}h5{font-size:.85rem;text-transform:uppercase}kbd{line-height:1;font-size:.66rem;padding:.1rem .33rem;border-radius:.25rem;border:2px solid;box-shadow:.125rem .125rem 0 #111;vertical-align:.33em}.file-tree,pre{overflow-x:auto;padding:1.5rem;border:1px solid}code{font-family:Consolas,Monaco,Andale Mono,Ubuntu Mono,monospace;font-size:.85em}.cmd{padding:.75rem;background:#111}.cmd code{color:#fefefe;white-space:pre-wrap}.cmd code:before{content:"$";font-weight:700;padding-right:.25em}main ol,main ul{margin-left:2.25rem}main li ol,main li ul,main li+li,main ol ol,main ul ul{margin-top:.5rem}ol ol{list-style:lower-latin}ol ol ol{list-style:lower-roman}main dt{font-weight:700}main dd{padding-left:2rem}dd ul{margin-left:0}dd li+li{margin:0}blockquote{border-left:.5rem solid;padding-left:.75rem}blockquote .author{font-size:.85rem}h2,h3,h4{margin-top:1.5em}a{cursor:pointer;color:#0076ff;text-decoration:none;transition:all .2s ease;border-bottom:1px solid white}a:hover{border-bottom:1px solid #0076ff}ol,ul{padding:0;margin-left:1.5em}ul{list-style-type:none}li{margin-bottom:10px}ul li:before{content:"\2013"}li:before{display:inline-block;color:#999;position:absolute;margin-left:-18px;transition:color .2s ease}code,pre{font-family:Menlo,Monaco,Lucida Console,Liberation Mono,DejaVu Sans Mono,Bitstream Vera Sans Mono,Courier New,monospace,serif;font-size:.92em;color:#d400ff}code:after,code:before{content:"`"}blockquote{margin:1.6em 0;padding:5px 24px;background:#efefef}button,input,textarea{margin:0;border:1px solid #d1d1d1;border-radius:5px;padding:.5em;vertical-align:middle;white-space:normal;background:none;line-height:1;font-size:1rem;font-family:inherit;transition:all .2s ease}button,input[type=submit]{padding:.65em 1em;background:#0076ff;color:#fff;border:none;cursor:pointer;text-transform:uppercase;transition:all .2s ease}button:focus,input:focus,textarea:focus{outline:0;border-color:#0076ff}button:hover{background:rgba(0,118,255,.8)}button:focus{box-shadow:0 0 0 2px rgba(0,118,255,.5)}button:disabled{pointer-events:none;background:#999}img{max-width:100%}textarea{min-height:300px;width:100%;resize:none;margin:1.4em 0;box-sizing:border-box}hr{border:none;border-bottom:1px solid #efefef;margin:6em auto}