{"id":428,"date":"2020-07-01T13:40:34","date_gmt":"2020-07-01T16:40:34","guid":{"rendered":"https:\/\/www.joemaster.com.br\/tutoriais\/?p=428"},"modified":"2022-12-09T08:38:53","modified_gmt":"2022-12-09T11:38:53","slug":"html-o-elemento-principal","status":"publish","type":"post","link":"https:\/\/www.joemaster.com.br\/tutoriais\/html-o-elemento-principal\/","title":{"rendered":"HTML &#8211; O elemento principal"},"content":{"rendered":"<p>A HTML <code>&lt;head&gt;<\/code>elemento \u00e9 um recipiente para os seguintes elementos: <code>&lt;title&gt;<\/code>, <code>&lt;style&gt;,<\/code> <code>&lt;meta&gt;<\/code>, <code>&lt;link&gt;<\/code>, <code>&lt;script&gt;<\/code>, e <code>&lt;base&gt;<\/code>.<\/p>\n<p>&nbsp;<\/p>\n<p>O elemento HTML<code> &lt;head&gt;<\/code><br \/>\nO <code>&lt;head&gt;<\/code>elemento \u00e9 um cont\u00eainer para metadados (dados sobre dados) e \u00e9 colocado entre a <code>&lt;html&gt;<\/code>marca e a <code>&lt;body&gt;<\/code>marca.<\/p>\n<p>Metadados HTML s\u00e3o dados sobre o documento HTML. Os metadados n\u00e3o s\u00e3o exibidos.<\/p>\n<p>Os metadados geralmente definem o t\u00edtulo do documento, o conjunto de caracteres, os estilos, os scripts e outras metainforma\u00e7\u00f5es.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>O elemento HTML <code>&lt;title&gt;<\/code><\/strong><\/p>\n<p><strong><code><\/code><\/strong><br \/>\nO <code>&lt;title&gt;<\/code>elemento define o t\u00edtulo do documento. O t\u00edtulo deve ser somente texto e \u00e9 mostrado na barra de t\u00edtulo do navegador ou na guia da p\u00e1gina.<\/p>\n<p>A tag <code>&lt;title&gt;<\/code> \u00e9 necess\u00e1ria nos documentos HTML!<\/p>\n<p>O conte\u00fado do t\u00edtulo da p\u00e1gina \u00e9 muito importante para a otimiza\u00e7\u00e3o de mecanismos de busca (SEO)! O t\u00edtulo da p\u00e1gina \u00e9 usado pelos algoritmos do mecanismo de pesquisa para decidir a ordem ao listar p\u00e1ginas nos resultados da pesquisa.<\/p>\n<p>O <code>&lt;title&gt;<\/code>elemento:<\/p>\n<p>define um t\u00edtulo na barra de ferramentas do navegador<br \/>\nfornece um t\u00edtulo para a p\u00e1gina quando ela \u00e9 adicionada aos favoritos<br \/>\nexibe um t\u00edtulo para a p\u00e1gina nos resultados do mecanismo de pesquisa<br \/>\nPortanto, tente tornar o t\u00edtulo o mais preciso e significativo poss\u00edvel!<\/p>\n<p>Um documento HTML simples:<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"html\">&lt;!DOCTYPE html&gt;\r\n&lt;html&gt;\r\n&lt;head&gt;\r\n  &lt;title&gt;A Meaningful Page Title&lt;\/title&gt;\r\n&lt;\/head&gt;\r\n&lt;body&gt;\r\n\r\nThe content of the document......\r\n\r\n&lt;\/body&gt;\r\n&lt;\/html&gt;<\/pre>\n<center><input type=\"button\" name=\"Submit\" value=\"Testar c&oacute;digo\" onClick=\"document.getElementById('divcode').style.display='block';\" style=\"background-color:#FFCC05;border-radius:15px;padding:10px;width:150px;color:#000;\"><br><br><\/center>\n<p>O elemento HTML <code>&lt;style&gt;<\/code><br \/>\nO <code>&lt;style&gt;<\/code>elemento \u00e9 usado para definir informa\u00e7\u00f5es de estilo para uma \u00fanica p\u00e1gina HTML:<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Exemplo<\/strong><br \/>\n<code>&lt;style&gt;<\/code><br \/>\n<code>body {background-color: powderblue;}<\/code><br \/>\n<code>h1 {color: red;}<\/code><br \/>\n<code>p {color: blue;}<\/code><br \/>\n<code>&lt;\/style&gt;<\/code><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"html\">&lt;!DOCTYPE html&gt;\r\n&lt;html&gt;\r\n&lt;head&gt;\r\n  &lt;title&gt;Page Title&lt;\/title&gt;\r\n  &lt;style&gt;\r\n    body {background-color: powderblue;}\r\n    h1 {color: red;}\r\n    p {color: blue;}\r\n  &lt;\/style&gt;\r\n&lt;\/head&gt;  \r\n&lt;body&gt;\r\n\r\n&lt;h1&gt;This is a Heading&lt;\/h1&gt;\r\n&lt;p&gt;This is a paragraph.&lt;\/p&gt;\r\n  \r\n&lt;\/body&gt;\r\n&lt;\/htm<\/pre>\n<center><input type=\"button\" name=\"Submit\" value=\"Testar c&oacute;digo\" onClick=\"document.getElementById('divcode').style.display='block';\" style=\"background-color:#FFCC05;border-radius:15px;padding:10px;width:150px;color:#000;\"><br><br><\/center>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>O elemento HTML <code>&lt;link&gt;<\/code><\/p>\n<p><code><\/code><br \/>\nO <code>&lt;link&gt;<\/code>elemento define o relacionamento entre o documento atual e um recurso externo.<\/p>\n<p>A <code>&lt;link&gt;<\/code> tag \u00e9 mais frequentemente usada para vincular a folhas de estilo externas:<\/p>\n<p><strong>Exemplo<\/strong><br \/>\n<code>&lt;link rel=\"stylesheet\" href=\"mystyle.css\"&gt;<\/code><\/p>\n<p>&nbsp;<\/p>\n<p><strong>O elemento HTML &lt;meta&gt;<\/strong><\/p>\n<p>O <code>&lt;meta&gt;<\/code>elemento geralmente \u00e9 usado para especificar o conjunto de caracteres, descri\u00e7\u00e3o da p\u00e1gina, palavras-chave, autor do documento e configura\u00e7\u00f5es da janela de visualiza\u00e7\u00e3o.<\/p>\n<p>Os metadados n\u00e3o ser\u00e3o exibidos na p\u00e1gina, mas s\u00e3o usados \u200b\u200bpelos navegadores (como exibir conte\u00fado ou recarregar p\u00e1gina), pelos mecanismos de pesquisa (palavras-chave) e outros servi\u00e7os da Web.<\/p>\n<p><strong>Exemplos<\/strong><br \/>\nDefina o conjunto de caracteres usado:<\/p>\n<p><code>&lt;meta charset=\"UTF-8\"&gt;\u00a0<\/code><\/p>\n<p>&nbsp;<\/p>\n<p>Defina palavras-chave para mecanismos de pesquisa:<\/p>\n<p><code>&lt;meta name=\"keywords\" content=\"HTML, CSS, JavaScript\"&gt;<\/code><\/p>\n<p>Defina uma descri\u00e7\u00e3o da sua p\u00e1gina da web:<\/p>\n<p><code>&lt;meta name=\"description\" content=\"Free Web tutorials\"&gt;<\/code><\/p>\n<p>Defina o autor de uma p\u00e1gina:<\/p>\n<p><code>&lt;meta name=\"author\" content=\"John Doe\"&gt;<\/code><\/p>\n<p>Atualize o documento a cada 30 segundos:<\/p>\n<p><code>&lt;meta http-equiv=\"refresh\" content=\"30\"&gt;<\/code><\/p>\n<p>Configurando a janela de visualiza\u00e7\u00e3o para tornar seu site com boa apar\u00eancia em todos os dispositivos:<\/p>\n<p><code>&lt;meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"&gt;<\/code><\/p>\n<p>Exemplo completo<\/p>\n<p><code><span class=\"tagnamecolor\"><span class=\"tagcolor\">&lt;<\/span>meta<span class=\"attributecolor\">\u00a0charset<span class=\"attributevaluecolor\">=\"UTF-8\"<\/span><\/span><span class=\"tagcolor\">&gt;<\/span><\/span><\/code><br \/>\n<code><span class=\"tagnamecolor\"><span class=\"tagcolor\">&lt;<\/span>meta<span class=\"attributecolor\">\u00a0name<span class=\"attributevaluecolor\">=\"description\"<\/span>\u00a0content<span class=\"attributevaluecolor\">=\"Free Web tutorials\"<\/span><\/span><span class=\"tagcolor\">&gt;<\/span><\/span><\/code><br \/>\n<code><span class=\"tagnamecolor\"><span class=\"tagcolor\">&lt;<\/span>meta<span class=\"attributecolor\">\u00a0name<span class=\"attributevaluecolor\">=\"keywords\"<\/span>\u00a0content<span class=\"attributevaluecolor\">=\"HTML, CSS, JavaScript\"<\/span><\/span><span class=\"tagcolor\">&gt;<\/span><\/span><\/code><br \/>\n<code><span class=\"tagnamecolor\"><span class=\"tagcolor\">&lt;<\/span>meta<span class=\"attributecolor\">\u00a0name<span class=\"attributevaluecolor\">=\"author\"<\/span>\u00a0content<span class=\"attributevaluecolor\">=\"John Doe\"<\/span><\/span><span class=\"tagcolor\">&gt;<\/span><\/span><\/code><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Configurando a janela de exibi\u00e7\u00e3o<\/strong><\/p>\n<p>A janela de visualiza\u00e7\u00e3o \u00e9 a \u00e1rea vis\u00edvel do usu\u00e1rio de uma p\u00e1gina da web. Varia de acordo com o dispositivo &#8211; ser\u00e1 menor em um telefone celular do que na tela do computador.<\/p>\n<p>Voc\u00ea deve incluir o seguinte <code>&lt;meta&gt;<\/code>elemento em todas as suas p\u00e1ginas da web:<\/p>\n<p><code>&lt;meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"&gt;<\/code><br \/>\nIsso fornece ao navegador instru\u00e7\u00f5es sobre como controlar as dimens\u00f5es e a escala da p\u00e1gina.<\/p>\n<p>A <code>width=device-width<\/code> pe\u00e7a define a largura da p\u00e1gina para seguir a largura da tela do dispositivo (que varia de acordo com o dispositivo).<\/p>\n<p>A<code> initial-scale=1.0 <\/code>pe\u00e7a define o n\u00edvel de zoom inicial quando a p\u00e1gina \u00e9 carregada pela primeira vez pelo navegador.<\/p>\n<p>Aqui est\u00e1 um exemplo de uma p\u00e1gina da web sem a meta tag da viewport e a mesma p\u00e1gina da web com a meta tag da viewport:<\/p>\n<p><span style=\"color: #ff0000;\">Dica: se voc\u00ea estiver navegando nesta p\u00e1gina com um telefone ou tablet, poder\u00e1 clicar nos dois links abaixo para ver a diferen\u00e7a.<\/span><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">&lt;!DOCTYPE html&gt;\r\n&lt;html&gt;\r\n&lt;body&gt;\r\n\r\n&lt;p&gt;&lt;b&gt;xxxxx x x x x x x x x x x&lt;\/b&gt;&lt;\/p&gt;\r\n\r\n&lt;img src=\"https:\/\/www.joemaster.com.br\/tutoriais\/wp-content\/uploads\/2020\/06\/tutorial-de-html-introducao-300x133.png\" alt=\"Chania\" width=\"460\" height=\"345\"&gt;\r\n\r\n&lt;p&gt;\r\nxxx x x x xx x x x x x x \r\nxx\r\nxx\r\nx\r\nx\r\nxxxxxxx x x x xx x x x x x x \r\nxx\r\nxx\r\nx\r\nx\r\nxxxxxxx x x x xx x x x x x x \r\nxx\r\nxx\r\nx\r\nx\r\nxxxxxxx x x x xx x x x x x x \r\nxx\r\nxx\r\nx\r\nx\r\nxxxxxxx x x x xx x x x x x x \r\nxx\r\nxx\r\nx\r\nx\r\nxxxxxxx x x x xx x x x x x x \r\nxx\r\nxx\r\nx\r\nx\r\nxxxxxxx x x x xx x x x x x x \r\nxx\r\nxx\r\nx\r\nx\r\nxxxx\r\n&lt;\/p&gt;\r\n\r\n&lt;\/body&gt;\r\n&lt;\/html&gt;<\/pre>\n<center><input type=\"button\" name=\"Submit\" value=\"Testar c&oacute;digo\" onClick=\"document.getElementById('divcode').style.display='block';\" style=\"background-color:#FFCC05;border-radius:15px;padding:10px;width:150px;color:#000;\"><br><br><\/center>\n<p>&nbsp;<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"html\">&lt;!DOCTYPE html&gt;\r\n&lt;html&gt;\r\n&lt;head&gt;\r\n&lt;meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\/&gt;\r\n&lt;style&gt;\r\nimg {\r\n    max-width: 100%;\r\n    height: auto;\r\n}\r\n&lt;\/style&gt;\r\n&lt;\/head&gt;\r\n&lt;body&gt;\r\n&lt;p&gt;&lt;b&gt;xxxxx\u00a0x\u00a0x\u00a0x\u00a0x\u00a0x\u00a0x\u00a0x\u00a0x\u00a0x\u00a0xxxxxx\u00a0x\u00a0x\u00a0x\u00a0x\u00a0x\u00a0x\u00a0x\u00a0x\u00a0x\u00a0xxxxxx\u00a0x\u00a0x\u00a0x\u00a0x\u00a0x\u00a0x\u00a0x\u00a0x\u00a0x\u00a0x&lt;\/b&gt;&lt;\/p&gt;\r\n\r\n&lt;img src=\"https:\/\/www.joemaster.com.br\/tutoriais\/wp-content\/uploads\/2020\/06\/tutorial-de-html-introducao-300x133.png\" alt=\"Chania\" width=\"460\" height=\"345\"&gt;\r\n\r\n&lt;p&gt;\r\nxxx x x x xx x x x x x x \r\nxx\r\nxx\r\nx\r\nx\r\nxxxxxxx x x x xx x x x x x x \r\nxx\r\nxx\r\nx\r\nx\r\nxxxxxxx x x x xx x x x x x x \r\nxx\r\nxx\r\nx\r\nx\r\nxxxxxxx x x x xx x x x x x x \r\nxx\r\nxx\r\nx\r\nx\r\nxxxxxxx x x x xx x x x x x x \r\nxx\r\nxx\r\nx\r\nx\r\nxxxxxxx x x x xx x x x x x x \r\nxx\r\nxx\r\nx\r\nx\r\nxxxx\r\n&lt;\/p&gt;\r\n\r\n&lt;\/body&gt;\r\n&lt;\/html&gt;\r\n<\/pre>\n<center><input type=\"button\" name=\"Submit\" value=\"Testar c&oacute;digo\" onClick=\"document.getElementById('divcode').style.display='block';\" style=\"background-color:#FFCC05;border-radius:15px;padding:10px;width:150px;color:#000;\"><br><br><\/center>\n<p>&nbsp;<\/p>\n<p><strong>O elemento HTML &lt;script&gt;<\/strong><\/p>\n<p>O<code> &lt;script&gt;<\/code>elemento \u00e9 usado para definir JavaScripts do lado do cliente.<\/p>\n<p>O seguinte JavaScript grava &#8220;Ol\u00e1 JavaScript!&#8221; em um elemento HTML com id = &#8220;demo&#8221;:<\/p>\n<p><strong>Exemplo<\/strong><br \/>\n<code>&lt;script&gt;<\/code><br \/>\n<code>function myFunction() {<\/code><br \/>\n<code>document.getElementById(\"demo\").innerHTML = \"Hello JavaScript!\";<\/code><br \/>\n<code>}<\/code><br \/>\n<code>&lt;\/script&gt;<\/code><\/p>\n<p>&nbsp;<\/p>\n<p><strong>O elemento HTML &lt;base&gt;<\/strong><\/p>\n<p>O <code>&lt;base&gt;<\/code>elemento especifica o URL base e \/ ou o destino para todos os URLs relativos em uma p\u00e1gina.<\/p>\n<p>A <code>&lt;base&gt;<\/code>tag deve ter um href ou um atributo de destino presente ou ambos.<\/p>\n<p>S\u00f3 pode haver um \u00fanico <code>&lt;base&gt;<\/code> elemento em um documento!<\/p>\n<p><code>&lt;head&gt;<\/code><br \/>\n<code>&lt;base href=\"https:\/\/www.coloqueseudominio.com.br\/\" target=\"_blank\"&gt;<\/code><br \/>\n<code>&lt;\/head&gt;<\/code><\/p>\n<p><code>&lt;body&gt;<\/code><br \/>\n<code>&lt;img src=\"images\/stickman.gif\" width=\"24\" height=\"39\" alt=\"Stickman\"&gt;<\/code><br \/>\n<code>&lt;a href=\"tags\/tag_base.asp\"&gt;HTML base Tag&lt;\/a&gt;<\/code><br \/>\n<code>&lt;\/body&gt;<\/code><\/p>\n<p>&nbsp;<\/p>\n<p><strong>Resumo do cap\u00edtulo<\/strong><\/p>\n<p>O <code>&lt;head&gt;<\/code>elemento \u00e9 um cont\u00eainer para metadados (dados sobre dados)<br \/>\nO <code>&lt;head&gt;<\/code>elemento \u00e9 colocado entre a <code>&lt;html&gt;<\/code>tag e a <code>&lt;body&gt;<\/code>tag<br \/>\nO\u00a0<code>&lt;title&gt;<\/code>elemento \u00e9 obrigat\u00f3rio e define o t\u00edtulo do documento<br \/>\nO <code>&lt;style&gt;<\/code>elemento \u00e9 usado para definir informa\u00e7\u00f5es de estilo para um \u00fanico documento<br \/>\nA <code>&lt;link&gt;<\/code> tag \u00e9 mais frequentemente usada para vincular a folhas de estilo externas<br \/>\nO <code>&lt;meta&gt;<\/code>elemento geralmente \u00e9 usado para especificar o conjunto de caracteres, descri\u00e7\u00e3o da p\u00e1gina, palavras-chave, autor do documento e configura\u00e7\u00f5es da janela de visualiza\u00e7\u00e3o<br \/>\nO <code>&lt;script&gt;<\/code>elemento \u00e9 usado para definir JavaScripts do lado do cliente<br \/>\nO <code>&lt;base&gt;<\/code>elemento especifica o URL base e \/ ou o destino para todos os URLs relativos em uma p\u00e1gina<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<div id=\"divcode\" style=\"display:none;z-index:200000001;padding:10px;border-radius:10px;background-color: #0054A1; position:fixed;top:100px;left: 50%;transform: translate(-50%, 0);\">\n  <font color=#fff>Ap\u00f3s clicar em Copy &#8663;<br>O c&oacute;digo fica pronto para testar ou colar onde quiser no  CTRL+V<\/font>\n  <form name=\"codigo\" id=\"codigo\"  method=\"post\" action=\"https:\/\/www.joemaster.com.br\/codigos\/gerar_codigo.php\" target=\"_blank\"><textarea name=\"testarcodigo\" id=\"testarcodigo\"  cols=\"30\" rows=\"30\" wrap=\"VIRTUAL\"><\/textarea><\/form><input type=\"button\" name=\"Submit\" value=\"Testar\" onClick=\"if(document.getElementById('testarcodigo').value ==''){alert('Copie o c\u00f3digo conforme descrito acima!');}else{document.getElementById('codigo').submit();setTimeout(function(){document.getElementById('testarcodigo').value='';document.getElementById('divcode').style.display='none'; }, 1000);}\" style=\"background-color:#FFCC05;border-radius:15px;padding:5px;width:100px;color:#000;\">\n  <input type=\"button\" name=\"Submit\" value=\"Fechar\" onClick=\"document.getElementById('testarcodigo').value='';document.getElementById('divcode').style.display='none';\" style=\"background-color:#FFCC05;border-radius:15px;padding:5px;width:100px;color:#000;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>A HTML &lt;head&gt;elemento \u00e9 um recipiente para os seguintes elementos: &lt;title&gt;, &lt;style&gt;, &lt;meta&gt;, &lt;link&gt;, &lt;script&gt;, e &lt;base&gt;. &nbsp; O elemento HTML &lt;head&gt; O &lt;head&gt;elemento \u00e9 um cont\u00eainer para metadados (dados sobre dados) e \u00e9 colocado entre a &lt;html&gt;marca e a &lt;body&gt;marca. Metadados HTML s\u00e3o dados sobre o documento HTML. Os metadados n\u00e3o s\u00e3o exibidos. Os [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":355,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[103],"tags":[108,104,106,16,99,105,69,107],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.12 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>HTML - O elemento principal - JoeMaster<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.joemaster.com.br\/tutoriais\/html-o-elemento-principal\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"HTML - O elemento principal - JoeMaster\" \/>\n<meta property=\"og:description\" content=\"A HTML &lt;head&gt;elemento \u00e9 um recipiente para os seguintes elementos: &lt;title&gt;, &lt;style&gt;, &lt;meta&gt;, &lt;link&gt;, &lt;script&gt;, e &lt;base&gt;. &nbsp; O elemento HTML &lt;head&gt; O &lt;head&gt;elemento \u00e9 um cont\u00eainer para metadados (dados sobre dados) e \u00e9 colocado entre a &lt;html&gt;marca e a &lt;body&gt;marca. Metadados HTML s\u00e3o dados sobre o documento HTML. Os metadados n\u00e3o s\u00e3o exibidos. Os [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.joemaster.com.br\/tutoriais\/html-o-elemento-principal\/\" \/>\n<meta property=\"og:site_name\" content=\"JoeMaster\" \/>\n<meta property=\"article:published_time\" content=\"2020-07-01T16:40:34+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-12-09T11:38:53+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.joemaster.com.br\/tutoriais\/wp-content\/uploads\/2020\/06\/tutorial-de-html-introducao.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1275\" \/>\n\t<meta property=\"og:image:height\" content=\"567\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"joemaster\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"joemaster\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. tempo de leitura\" \/>\n\t<meta name=\"twitter:data2\" content=\"8 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.joemaster.com.br\/tutoriais\/html-o-elemento-principal\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.joemaster.com.br\/tutoriais\/html-o-elemento-principal\/\"},\"author\":{\"name\":\"joemaster\",\"@id\":\"https:\/\/www.joemaster.com.br\/tutoriais\/#\/schema\/person\/228e8f1dfe22da473e356f81c1033a9d\"},\"headline\":\"HTML &#8211; 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