@import url(https://fonts.googleapis.com/css2?family=Fira+Sans:ital,wght@0,400;0,700;1,400&display=swap); .selector__title{margin-bottom:10px}.selector__header{cursor:pointer;display:flex;gap:5px;transition:background-color .2s}.selector__header:hover{background-color:rgba(65,65,65,.5019607843)}.selector__arrow{height:24px;width:24px;background-image:url(data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz48c3ZnIHdpZHRoPSIyNHB4IiBoZWlnaHQ9IjI0cHgiIHN0cm9rZS13aWR0aD0iMS41IiB2aWV3Qm94PSIwIDAgMjQgMjQiIGZpbGw9Im5vbmUiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgY29sb3I9IiNkZWUzZTciPjxwYXRoIGQ9Ik05IDZsNiA2LTYgNiIgc3Ryb2tlPSIjZGVlM2U3IiBzdHJva2Utd2lkdGg9IjEuNSIgc3Ryb2tlLWxpbmVjYXA9InJvdW5kIiBzdHJva2UtbGluZWpvaW49InJvdW5kIj48L3BhdGg+PC9zdmc+);background-size:contain;transition:transform .5s}.selector__arrow--active{transform:rotate(90deg)}.selector__levels{overflow:hidden;margin:0;margin-left:12px;padding:0;list-style-type:none;border-left:1px solid #414141;transition:max-height .5s}.selector__level{cursor:pointer;position:relative;padding-left:27px;transition:background-color .2s}.selector__level:hover{background-color:rgba(65,65,65,.5019607843)}.selector__level--active{background-color:#414141}.selector__level::before{content:"✓";color:#727272;position:absolute;left:10px;font-weight:bold}.selector__level--lvl-done::before{color:#3aba2e}.selector__level--help-used::before{content:"✗";color:#cf3b47;left:9px}.selector__reset-btn{cursor:pointer;margin-top:10px;padding:4px 9px;color:#0b0f18;background-color:#dee3e7;border:none} .description{height:100%;display:grid;grid-template-rows:auto 1fr auto}.description__title{font-weight:bold}.description__footer{display:flex;justify-content:space-between;gap:5px;align-items:flex-end}@media(max-width: 1000px){.description__footer{position:fixed;top:calc(100% - 40px);right:10px;z-index:5}}.footer__year{font-size:12px;line-height:12px;opacity:.7}.footer__github,.footer__rss{display:block;cursor:pointer;opacity:.5;height:30px;background-size:cover;transition:.3s}.footer__github:hover,.footer__rss:hover{opacity:1}.footer__github{width:30px;background-image:url(data:image/svg+xml;base64,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)}.footer__rss{width:80px;background-image:url(data:image/svg+xml;base64,<svg id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 552.8 205.3"><style>.st0{fill:#fff}.st1{clip-path:url(#SVGID_2_)}.st2{clip-path:url(#SVGID_4_)}.st3{clip-path:url(#SVGID_6_)}.st4{clip-path:url(#SVGID_8_)}.st5{fill:#fff;stroke:#000;stroke-width:4;stroke-miterlimit:10}.st6{clip-path:url(#SVGID_8_)}.st6,.st7{fill:none;stroke:#000;stroke-width:4;stroke-miterlimit:10}.st8,.st9{clip-path:url(#SVGID_10_)}.st9{fill:none;stroke:#000;stroke-width:4;stroke-miterlimit:10}</style><title>rs_school_js</title><path d="M285.4 68l26.3-1.7c.6 4.3 1.7 7.5 3.5 9.8 2.9 3.6 6.9 5.4 12.2 5.4 3.9 0 7-.9 9.1-2.8 2-1.5 3.2-3.9 3.2-6.4 0-2.4-1.1-4.7-3-6.2-2-1.8-6.7-3.6-14.1-5.2-12.1-2.7-20.8-6.3-25.9-10.9-5.1-4.3-8-10.6-7.8-17.3 0-4.6 1.4-9.2 4-13 3-4.3 7.1-7.7 12-9.6 5.3-2.3 12.7-3.5 22-3.5 11.4 0 20.1 2.1 26.1 6.4 6 4.2 9.6 11 10.7 20.3l-26 1.5c-.7-4-2.1-6.9-4.4-8.8s-5.3-2.8-9.2-2.8c-3.2 0-5.6.7-7.2 2-1.5 1.2-2.5 3-2.4 5 0 1.5.8 2.9 2 3.8 1.3 1.2 4.4 2.3 9.3 3.3 12.1 2.6 20.7 5.2 26 7.9 5.3 2.7 9.1 6 11.4 9.9 2.4 4 3.6 8.6 3.5 13.3 0 5.6-1.6 11.2-4.8 15.9-3.3 4.9-7.9 8.7-13.3 11-5.7 2.5-12.9 3.8-21.5 3.8-15.2 0-25.7-2.9-31.6-8.8S286.1 77 285.4 68zM6.3 97.6V8.2h46.1c8.5 0 15.1.7 19.6 2.2 4.4 1.4 8.3 4.3 10.9 8.2 2.9 4.3 4.3 9.3 4.2 14.5.3 8.8-4.2 17.2-11.9 21.6-3 1.7-6.3 2.9-9.7 3.5 2.5.7 5 1.9 7.2 3.3 1.7 1.4 3.1 3 4.4 4.7 1.5 1.7 2.8 3.6 3.9 5.6l13.4 25.9H63L48.2 70.2c-1.9-3.5-3.5-5.8-5-6.9-2-1.4-4.4-2.1-6.8-2.1H34v36.3H6.3zM34 44.4h11.7c2.5-.2 4.9-.6 7.3-1.2 1.8-.3 3.4-1.3 4.5-2.8 2.7-3.6 2.3-8.7-1-11.8-1.8-1.5-5.3-2.3-10.3-2.3H34v18.1zM0 174.2l26.3-1.7c.6 4.3 1.7 7.5 3.5 9.8 2.8 3.6 6.9 5.5 12.2 5.5 3.9 0 7-.9 9.1-2.8 2-1.6 3.2-3.9 3.2-6.4 0-2.4-1.1-4.7-3-6.2-2-1.8-6.7-3.6-14.2-5.2-12.1-2.7-20.8-6.3-25.9-10.9-5.1-4.3-8-10.6-7.8-17.3 0-4.6 1.4-9.2 4-13 3-4.3 7.1-7.7 12-9.6 5.3-2.3 12.7-3.5 22-3.5 11.4 0 20.1 2.1 26.1 6.4s9.5 11 10.6 20.3l-26 1.5c-.7-4-2.1-6.9-4.4-8.8-2.2-1.9-5.3-2.8-9.2-2.7-3.2 0-5.6.7-7.2 2.1-1.6 1.2-2.5 3-2.4 5 0 1.5.8 2.9 2 3.8 1.3 1.2 4.4 2.3 9.3 3.3 12.1 2.6 20.7 5.2 26 7.9 5.3 2.7 9.1 6 11.4 9.9 2.4 4 3.6 8.6 3.6 13.2 0 5.6-1.7 11.1-4.8 15.8-3.3 4.9-7.9 8.7-13.3 11-5.7 2.5-12.9 3.8-21.5 3.8-15.2 0-25.7-2.9-31.6-8.8-5.9-6-9.2-13.4-10-22.4z"/><path d="M133 167.2l24.2 7.3c-1.3 6.1-4 11.9-7.7 17-3.4 4.5-7.9 8-13 10.3-5.2 2.3-11.8 3.5-19.8 3.5-9.7 0-17.7-1.4-23.8-4.2-6.2-2.8-11.5-7.8-16-14.9-4.5-7.1-6.7-16.2-6.7-27.3 0-14.8 3.9-26.2 11.8-34.1s19-11.9 33.4-11.9c11.3 0 20.1 2.3 26.6 6.8 6.4 4.6 11.2 11.6 14.4 21l-24.4 5.4c-.6-2.1-1.5-4.2-2.7-6-1.5-2.1-3.4-3.7-5.7-4.9-2.3-1.2-4.9-1.7-7.5-1.7-6.3 0-11.1 2.5-14.4 7.6-2.5 3.7-3.8 9.6-3.8 17.6 0 9.9 1.5 16.7 4.5 20.4 3 3.7 7.2 5.5 12.7 5.5 5.3 0 9.3-1.5 12-4.4 2.7-3.1 4.7-7.4 5.9-13zm56.5-52.8h27.6v31.3h30.2v-31.3h27.8v89.4h-27.8v-36.2h-30.2v36.2h-27.6v-89.4z"/><path d="M271.3 159.1c0-14.6 4.1-26 12.2-34.1 8.1-8.1 19.5-12.2 34-12.2 14.9 0 26.3 4 34.4 12S364 144 364 158.4c0 10.5-1.8 19-5.3 25.7-3.4 6.6-8.7 12-15.2 15.6-6.7 3.7-15 5.6-24.9 5.6-10.1 0-18.4-1.6-25-4.8-6.8-3.4-12.4-8.7-16.1-15.2-4.1-7-6.2-15.7-6.2-26.2zm27.6.1c0 9 1.7 15.5 5 19.5 3.3 3.9 7.9 5.9 13.7 5.9 5.9 0 10.5-1.9 13.8-5.8s4.9-10.8 4.9-20.8c0-8.4-1.7-14.6-5.1-18.4-3.4-3.9-8-5.8-13.8-5.8-5.1-.2-10 2-13.4 5.9-3.4 3.9-5.1 10.4-5.1 19.5zm93.4-.1c0-14.6 4.1-26 12.2-34.1 8.1-8.1 19.5-12.2 34-12.2 14.9 0 26.4 4 34.4 12S485 144 485 158.4c0 10.5-1.8 19-5.3 25.7-3.4 6.6-8.7 12-15.2 15.6-6.7 3.7-15 5.6-24.9 5.6-10.1 0-18.4-1.6-25-4.8-6.8-3.4-12.4-8.7-16.1-15.2-4.1-7-6.2-15.7-6.2-26.2zm27.6.1c0 9 1.7 15.5 5 19.5 3.3 3.9 7.9 5.9 13.7 5.9 5.9 0 10.5-1.9 13.8-5.8 3.3-3.9 4.9-10.8 4.9-20.8 0-8.4-1.7-14.6-5.1-18.4-3.4-3.9-8-5.8-13.8-5.8-5.1-.2-10.1 2-13.4 5.9-3.4 3.9-5.1 10.4-5.1 19.5z"/><path d="M482.1 114.4h27.6v67.4h43.1v22H482v-89.4z"/><ellipse transform="rotate(-37.001 420.46 67.88)" class="st0" cx="420.5" cy="67.9" rx="63" ry="51.8"/><defs><ellipse id="SVGID_1_" transform="rotate(-37.001 420.46 67.88)" cx="420.5" cy="67.9" rx="63" ry="51.8"/></defs><clipPath id="SVGID_2_"><use xlink:href="#SVGID_1_" overflow="visible"/></clipPath><g class="st1"><path transform="rotate(-37.001 420.82 68.353)" class="st0" d="M330.9-14.2h179.8v165.1H330.9z"/><g id="Layer_2_1_"><defs><path id="SVGID_3_" transform="rotate(-37.001 420.82 68.353)" d="M330.9-14.2h179.8v165.1H330.9z"/></defs><clipPath id="SVGID_4_"><use xlink:href="#SVGID_3_" overflow="visible"/></clipPath><g id="Layer_1-2" class="st2"><ellipse transform="rotate(-37.001 420.46 67.88)" class="st0" cx="420.5" cy="67.9" rx="63" ry="51.8"/><defs><ellipse id="SVGID_5_" transform="rotate(-37.001 420.46 67.88)" cx="420.5" cy="67.9" rx="63" ry="51.8"/></defs><clipPath id="SVGID_6_"><use xlink:href="#SVGID_5_" overflow="visible"/></clipPath><g class="st3"><path transform="rotate(-37 420.799 68.802)" class="st0" d="M357.8 17h125.9v103.7H357.8z"/><defs><path id="SVGID_7_" transform="rotate(-37 420.799 68.802)" d="M357.8 17h125.9v103.7H357.8z"/></defs><clipPath id="SVGID_8_"><use xlink:href="#SVGID_7_" overflow="visible"/></clipPath><g class="st4"><ellipse transform="rotate(-37.001 420.46 67.88)" class="st5" cx="420.5" cy="67.9" rx="63" ry="51.8"/></g><path transform="rotate(-37 420.799 68.802)" class="st6" d="M357.8 17h125.9v103.7H357.8z"/><ellipse transform="rotate(-37.001 420.46 67.88)" class="st7" cx="420.5" cy="67.9" rx="63" ry="51.8"/><path transform="rotate(-37 420.799 68.802)" class="st0" d="M357.8 17h125.9v103.7H357.8z"/><defs><path id="SVGID_9_" transform="rotate(-37 420.799 68.802)" d="M357.8 17h125.9v103.7H357.8z"/></defs><clipPath id="SVGID_10_"><use xlink:href="#SVGID_9_" overflow="visible"/></clipPath><g class="st8"><ellipse transform="rotate(-37.001 420.46 67.88)" class="st5" cx="420.5" cy="67.9" rx="63" ry="51.8"/></g><path transform="rotate(-37 420.799 68.802)" class="st9" d="M357.8 17h125.9v103.7H357.8z"/><path transform="rotate(-37.001 420.82 68.353)" class="st7" d="M330.9-14.2h179.8v165.1H330.9z"/></g><ellipse transform="rotate(-37.001 420.46 67.88)" class="st7" cx="420.5" cy="67.9" rx="63" ry="51.8"/><path d="M392.4 61.3l10-7 12.3 17.5c2.1 2.8 3.7 5.8 4.9 9.1.7 2.5.5 5.2-.5 7.6-1.3 3-3.4 5.5-6.2 7.3-3.3 2.3-6.1 3.6-8.5 4-2.3.4-4.7 0-6.9-1-2.4-1.2-4.5-2.9-6.1-5.1l8.6-8c.7 1.1 1.6 2.1 2.6 2.9.7.5 1.5.8 2.4.8.7 0 1.4-.3 1.9-.7 1-.6 1.7-1.8 1.6-3-.3-1.7-1-3.4-2.1-4.7l-14-19.7zm30 11.1l9.1-7.2c1 1.2 2.3 2.1 3.7 2.6 2 .6 4.1.2 5.8-1.1 1.2-.8 2.2-1.9 2.6-3.3.6-1.8-.4-3.8-2.2-4.4-.3-.1-.6-.2-.9-.2-1.2-.1-3.3.4-6.4 1.7-5.1 2.1-9.1 2.9-12.1 2.6-2.9-.3-5.6-1.8-7.2-4.3-1.2-1.7-1.8-3.7-1.9-5.7 0-2.3.6-4.6 1.9-6.5 1.9-2.7 4.2-5 7-6.8 4.2-2.9 7.9-4.3 11.1-4.3 3.2 0 6.2 1.5 9 4.6l-9 7.1c-1.8-2.3-5.2-2.8-7.5-1l-.3.3c-1 .6-1.7 1.5-2.1 2.6-.3.8-.1 1.7.4 2.4.4.5 1 .9 1.7.9.8.1 2.2-.3 4.2-1.2 5-2.1 8.8-3.3 11.4-3.7 2.2-.4 4.5-.2 6.6.7 1.9.8 3.5 2.2 4.6 3.9 1.4 2 2.2 4.4 2.3 6.9.1 2.6-.6 5.1-2 7.3-1.8 2.7-4.1 5-6.8 6.8-5.5 3.8-10 5.4-13.6 4.8-3.9-.6-7.1-2.6-9.4-5.5z"/></g></g></g></svg>);filter:invert(100%)} .field{cursor:help;display:flex;justify-content:center;align-items:flex-end;max-width:80%;border:2px solid #dee3e7;padding:20px 40px;transition:.3s}.select-me{animation:select-me .5s ease-in infinite}.element-selected{animation:element-selected 1s ease-in-out forwards}.hover{box-shadow:0 0 10px 5px rgba(222,227,231,.5)}.red{background-color:#cf3b47;outline:none}.blue{background-color:#3b79cf;outline:none}.green{background-color:#3aba2e;outline:none}square,circle,underscore{width:30px;height:30px;outline:2px solid #dee3e7;outline-offset:-2px;margin:12px;transition:.3s}underscore{height:0;outline:none;border-bottom:2px solid #dee3e7}circle{border-radius:20px}triangle{width:30px;height:30px;margin:12px;background-image:url(data:image/svg+xml;base64,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);background-size:contain;transition:.3s}triangle.red{background-color:rgba(0,0,0,0);background-image:url(data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMjRweCIgaGVpZ2h0PSIyNHB4IiB2aWV3Qm94PSIwIDAgMjQgMjQiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+DQogIDxwYXRoIGQ9Ik0xMS40NzUgMi45NDdhLjYuNiAwIDAxMS4wNSAwbDkuMzczIDE2LjkxMmEuNi42IDAgMDEtLjUyNC44OTFIMi42MjZhLjYuNiAwIDAxLS41MjUtLjg5bDkuMzc0LTE2LjkxM3oiIGZpbGw9IiNjZjNiNDciIHN0cm9rZS1saW5lY2FwPSJyb3VuZCIgc3Ryb2tlLWxpbmVqb2luPSJyb3VuZCI+PC9wYXRoPg0KPC9zdmc+DQo=)}triangle.green{background-color:rgba(0,0,0,0);background-image:url(data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMjRweCIgaGVpZ2h0PSIyNHB4IiB2aWV3Qm94PSIwIDAgMjQgMjQiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+DQogIDxwYXRoIGQ9Ik0xMS40NzUgMi45NDdhLjYuNiAwIDAxMS4wNSAwbDkuMzczIDE2LjkxMmEuNi42IDAgMDEtLjUyNC44OTFIMi42MjZhLjYuNiAwIDAxLS41MjUtLjg5bDkuMzc0LTE2LjkxM3oiIGZpbGw9IiMzYWJhMmUiIHN0cm9rZS1saW5lY2FwPSJyb3VuZCIgc3Ryb2tlLWxpbmVqb2luPSJyb3VuZCI+PC9wYXRoPg0KPC9zdmc+DQo=)}triangle.blue{background-color:rgba(0,0,0,0);background-image:url(data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMjRweCIgaGVpZ2h0PSIyNHB4IiB2aWV3Qm94PSIwIDAgMjQgMjQiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+DQogIDxwYXRoIGQ9Ik0xMS40NzUgMi45NDdhLjYuNiAwIDAxMS4wNSAwbDkuMzczIDE2LjkxMmEuNi42IDAgMDEtLjUyNC44OTFIMi42MjZhLjYuNiAwIDAxLS41MjUtLjg5bDkuMzc0LTE2LjkxM3oiIGZpbGw9IiMzYjc5Y2YiIHN0cm9rZS1saW5lY2FwPSJyb3VuZCIgc3Ryb2tlLWxpbmVqb2luPSJyb3VuZCI+PC9wYXRoPg0KPC9zdmc+DQo=)}triangle.hover{box-shadow:none;filter:drop-shadow(0 0 8px #ffffff)}border{position:relative;display:flex;justify-content:center;align-items:center;border:2px dashed #dee3e7;transition:.3s}@keyframes select-me{0%{transform:scale(1)}50%{transform:scale(1.2)}100%{transform:scale(1)}}@keyframes element-selected{0%{transform:translateY(0) scaleY(1);opacity:1}100%{transform:translateY(-100vh) scaleY(3);opacity:0}}.visualizer__title{margin-top:15px;position:relative;z-index:5;top:1px;display:inline-block;padding:5px 20px;background-color:#131924;border:1px solid #414141;border-bottom:none}.visualizer__body{height:calc(100% - 50px);background-color:#131924;border-top:1px solid #414141;border-left:1px solid #414141;border-bottom:1px solid #414141}.visualizer__task{margin-top:20px;text-align:center;font-size:24px}.visualizer__view-container{height:75%;display:flex;justify-content:center;align-items:center}.visualizer__tool-tip{position:relative;font-family:monospace;font-size:16px;background-color:#131924;border:1px solid #414141;padding:10px 20px;position:fixed;z-index:999}@media(max-width: 650px){.visualizer__task{font-size:18px}.visualizer__view-container{font-size:13px}} pre code.hljs{display:block;overflow-x:auto;padding:1em}code.hljs{padding:3px 5px}.hljs{color:#abb2bf;background:#282c34}.hljs-comment,.hljs-quote{color:#5c6370;font-style:italic}.hljs-doctag,.hljs-formula,.hljs-keyword{color:#c678dd}.hljs-deletion,.hljs-name,.hljs-section,.hljs-selector-tag,.hljs-subst{color:#e06c75}.hljs-literal{color:#56b6c2}.hljs-addition,.hljs-attribute,.hljs-meta .hljs-string,.hljs-regexp,.hljs-string{color:#98c379}.hljs-attr,.hljs-number,.hljs-selector-attr,.hljs-selector-class,.hljs-selector-pseudo,.hljs-template-variable,.hljs-type,.hljs-variable{color:#d19a66}.hljs-bullet,.hljs-link,.hljs-meta,.hljs-selector-id,.hljs-symbol,.hljs-title{color:#61aeee}.hljs-built_in,.hljs-class .hljs-title,.hljs-title.class_{color:#e6c07b}.hljs-emphasis{font-style:italic}.hljs-strong{font-weight:700}.hljs-link{text-decoration:underline} @keyframes strobe{0%{background-color:#131924}100%{background-color:#1c2029}}@keyframes wrong-selector{0%,100%{transform:translateX(0)}10%,30%,50%,70%,90%{transform:translateX(-5px)}20%,40%,60%,80%{transform:translateX(5px)}}@keyframes correct-selector{0%,20%,40%,60%,80%,100%{transform:scale(1)}10%,30%,50%,70%,90%{transform:scale(1.2)}}.style-editor{position:relative}.style-editor__title{margin-top:7px;position:relative;z-index:5;top:1px;display:inline-block;padding:5px 20px;background-color:#131924;border:1px solid #414141;border-bottom:none}.style-editor__body{position:relative;height:calc(100% - 43px);background-color:#131924;border-top:1px solid #414141;border-left:1px solid #414141}.style-editor__input,.style-editor__highlighted-css{position:relative;top:16px;left:40px;z-index:2;width:calc(100% - 80px);font-family:monospace;font-size:16px;min-width:200px;height:19px;padding:5px 11px;margin:0;outline:none;border:none;background-color:#131924;animation:strobe .5s infinite}.style-editor__input{color:rgba(0,0,0,0);caret-color:#dee3e7}.style-editor__input::placeholder{color:#989898}.style-editor__highlighted-css{position:relative;top:-15px;z-index:2;color:#dee3e7;pointer-events:none;background-color:rgba(0,0,0,0);animation:none}.style-editor__css-styles{position:relative;top:-41px;margin:0;background-color:#131924}.style-editor__css-styles .hljs{counter-increment:line;padding-left:50px;background-color:#131924}.style-editor__css-styles .hljs::before{content:counter(line);position:absolute;right:calc(100% - 40px);padding-right:10px;border-right:1px solid #414141}.style-editor__css-styles:first-child{right:0}.style-editor__submit-btn,.style-editor__help-btn{position:absolute;z-index:5;top:61px;right:20px;cursor:pointer;width:70px;height:27px;padding:4px 9px;color:#0b0f18;background-color:#dee3e7;border:none;transition:.3s}.style-editor__submit-btn:hover,.style-editor__help-btn:hover{border-radius:5px}.style-editor__submit-btn--wrong-selector,.style-editor__help-btn--wrong-selector{background-color:#cf3b47;animation:wrong-selector .8s}.style-editor__submit-btn--correct-selector,.style-editor__help-btn--correct-selector{background-color:#5bcf3b;animation:correct-selector .8s}.style-editor__help-btn{top:101px}@media(max-width: 650px){.style-editor__input,.style-editor__highlighted-css,.style-editor__css-styles{font-size:13px}} .html-viewer__title{margin-top:7px;position:relative;z-index:5;top:1px;display:inline-block;padding:5px 20px;background-color:#131924;border:1px solid #414141;border-bottom:none}.html-viewer__body{height:calc(100% - 43px);background-color:#131924;border-top:1px solid #414141;border-left:1px solid #414141}.html-viewer__code{position:relative;margin:0;padding:20px 20px 20px 50px;background-color:#131924;counter-reset:line}.html-viewer__code .hljs-tag{counter-increment:line;cursor:help}.html-viewer__code .hljs-tag::before{content:counter(line);position:absolute;right:calc(100% - 40px);padding-right:10px;border-right:1px solid #414141}@media(max-width: 650px){.html-viewer__code{font-size:13px}}.code-hover{background-color:#414958} .task{display:flex;flex-direction:column}.task__selector,.task__description{padding:15px}.task__selector{border-bottom:1px solid #414141} .game{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:1fr 2fr}.game__visualizer{grid-column:span 2}@media(max-width: 1000px){.game{grid-template-columns:1fr}.game__visualizer{grid-column:1}} /*! normalize.css v8.0.1 | MIT License | github.com/necolas/normalize.css */ /* Document ========================================================================== */ /** * 1. Correct the line height in all browsers. * 2. Prevent adjustments of font size after orientation changes in iOS. */ html { line-height: 1.15; /* 1 */ -webkit-text-size-adjust: 100%; /* 2 */ } /* Sections ========================================================================== */ /** * Remove the margin in all browsers. */ body { margin: 0; } /** * Render the `main` element consistently in IE. */ main { display: block; } /** * Correct the font size and margin on `h1` elements within `section` and * `article` contexts in Chrome, Firefox, and Safari. */ h1 { font-size: 2em; margin: 0.67em 0; } /* Grouping content ========================================================================== */ /** * 1. Add the correct box sizing in Firefox. * 2. Show the overflow in Edge and IE. */ hr { box-sizing: content-box; /* 1 */ height: 0; /* 1 */ overflow: visible; /* 2 */ } /** * 1. Correct the inheritance and scaling of font size in all browsers. * 2. Correct the odd `em` font sizing in all browsers. */ pre { font-family: monospace, monospace; /* 1 */ font-size: 1em; /* 2 */ } /* Text-level semantics ========================================================================== */ /** * Remove the gray background on active links in IE 10. */ a { background-color: transparent; } /** * 1. Remove the bottom border in Chrome 57- * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari. */ abbr[title] { border-bottom: none; /* 1 */ text-decoration: underline; /* 2 */ text-decoration: underline dotted; /* 2 */ } /** * Add the correct font weight in Chrome, Edge, and Safari. */ b, strong { font-weight: bolder; } /** * 1. Correct the inheritance and scaling of font size in all browsers. * 2. Correct the odd `em` font sizing in all browsers. */ code, kbd, samp { font-family: monospace, monospace; /* 1 */ font-size: 1em; /* 2 */ } /** * Add the correct font size in all browsers. */ small { font-size: 80%; } /** * Prevent `sub` and `sup` elements from affecting the line height in * all browsers. */ sub, sup { font-size: 75%; line-height: 0; position: relative; vertical-align: baseline; } sub { bottom: -0.25em; } sup { top: -0.5em; } /* Embedded content ========================================================================== */ /** * Remove the border on images inside links in IE 10. */ img { border-style: none; } /* Forms ========================================================================== */ /** * 1. Change the font styles in all browsers. * 2. Remove the margin in Firefox and Safari. */ button, input, optgroup, select, textarea { font-family: inherit; /* 1 */ font-size: 100%; /* 1 */ line-height: 1.15; /* 1 */ margin: 0; /* 2 */ } /** * Show the overflow in IE. * 1. Show the overflow in Edge. */ button, input { /* 1 */ overflow: visible; } /** * Remove the inheritance of text transform in Edge, Firefox, and IE. * 1. Remove the inheritance of text transform in Firefox. */ button, select { /* 1 */ text-transform: none; } /** * Correct the inability to style clickable types in iOS and Safari. */ button, [type="button"], [type="reset"], [type="submit"] { -webkit-appearance: button; } /** * Remove the inner border and padding in Firefox. */ button::-moz-focus-inner, [type="button"]::-moz-focus-inner, [type="reset"]::-moz-focus-inner, [type="submit"]::-moz-focus-inner { border-style: none; padding: 0; } /** * Restore the focus styles unset by the previous rule. */ button:-moz-focusring, [type="button"]:-moz-focusring, [type="reset"]:-moz-focusring, [type="submit"]:-moz-focusring { outline: 1px dotted ButtonText; } /** * Correct the padding in Firefox. */ fieldset { padding: 0.35em 0.75em 0.625em; } /** * 1. Correct the text wrapping in Edge and IE. * 2. Correct the color inheritance from `fieldset` elements in IE. * 3. Remove the padding so developers are not caught out when they zero out * `fieldset` elements in all browsers. */ legend { box-sizing: border-box; /* 1 */ color: inherit; /* 2 */ display: table; /* 1 */ max-width: 100%; /* 1 */ padding: 0; /* 3 */ white-space: normal; /* 1 */ } /** * Add the correct vertical alignment in Chrome, Firefox, and Opera. */ progress { vertical-align: baseline; } /** * Remove the default vertical scrollbar in IE 10+. */ textarea { overflow: auto; } /** * 1. Add the correct box sizing in IE 10. * 2. Remove the padding in IE 10. */ [type="checkbox"], [type="radio"] { box-sizing: border-box; /* 1 */ padding: 0; /* 2 */ } /** * Correct the cursor style of increment and decrement buttons in Chrome. */ [type="number"]::-webkit-inner-spin-button, [type="number"]::-webkit-outer-spin-button { height: auto; } /** * 1. Correct the odd appearance in Chrome and Safari. * 2. Correct the outline style in Safari. */ [type="search"] { -webkit-appearance: textfield; /* 1 */ outline-offset: -2px; /* 2 */ } /** * Remove the inner padding in Chrome and Safari on macOS. */ [type="search"]::-webkit-search-decoration { -webkit-appearance: none; } /** * 1. Correct the inability to style clickable types in iOS and Safari. * 2. Change font properties to `inherit` in Safari. */ ::-webkit-file-upload-button { -webkit-appearance: button; /* 1 */ font: inherit; /* 2 */ } /* Interactive ========================================================================== */ /* * Add the correct display in Edge, IE 10+, and Firefox. */ details { display: block; } /* * Add the correct display in all browsers. */ summary { display: list-item; } /* Misc ========================================================================== */ /** * Add the correct display in IE 10+. */ template { display: none; } /** * Add the correct display in IE 10. */ [hidden] { display: none; } .container{cursor:auto;min-height:100vh;display:grid;grid-template-columns:175px 1fr;color:#dee3e7;font-family:"Fira Sans",sans-serif;line-height:1.5;user-select:none;background-color:#0b0f18}@media(max-width: 1000px){.container{grid-template-columns:1fr}}.overlay{cursor:wait;position:fixed;top:0;left:0;right:0;bottom:0;z-index:999;background-color:rgba(0,0,0,0)}