{"id":649,"date":"2020-07-03T19:33:10","date_gmt":"2020-07-03T22:33:10","guid":{"rendered":"https:\/\/www.joemaster.com.br\/tutoriais\/?p=649"},"modified":"2022-12-09T08:33:24","modified_gmt":"2022-12-09T11:33:24","slug":"layout-css-overflow","status":"publish","type":"post","link":"https:\/\/www.joemaster.com.br\/tutoriais\/layout-css-overflow\/","title":{"rendered":"Layout CSS – Overflow"},"content":{"rendered":"

A\u00a0overflow<\/code>propriedade\u00a0CSS\u00a0controla o que acontece com o conte\u00fado que \u00e9 muito grande para caber em uma \u00e1rea.<\/p>\n

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<!DOCTYPE html>\r\n<html>\r\n<head>\r\n<style>\r\n#overflowTest {\r\n  background: #4CAF50;\r\n  color: white;\r\n  padding: 15px;\r\n  width: 50%;\r\n  height: 100px;\r\n  overflow: scroll;\r\n  border: 1px solid #ccc;\r\n}\r\n<\/style>\r\n<\/head>\r\n<body>\r\n\r\n<div id=\"overflowTest\">This text is really long and the height of its container is only 100 pixels. Therefore, a scrollbar is added to help the reader to scroll the content. Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut laoreet dolore magna aliquam erat volutpat. Ut wisi enim ad minim veniam, quis nostrud exerci tation ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat, vel illum dolore eu feugiat nulla facilisis at vero eros et accumsan et iusto odio dignissim qui blandit praesent luptatum zzril delenit augue duis dolore te feugait nulla facilisi. Nam liber tempor cum soluta nobis eleifend option congue nihil imperdiet doming id quod mazim placerat facer possim assum. Typi non habent claritatem insitam; est usus legentis in iis qui facit eorum claritatem.<\/div>\r\n\r\n<\/body>\r\n<\/html>\r\n<\/pre>\n


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Estouro de CSS<\/strong><\/p>\n
A overflow<\/code>propriedade especifica se deve recortar o conte\u00fado ou adicionar barras de rolagem quando o conte\u00fado de um elemento \u00e9 muito grande para caber na \u00e1rea especificada.<\/p>\n
A overflow<\/code>propriedade possui os seguintes valores:<\/p>\n
visible<\/code>– Padr\u00e3o. O estouro n\u00e3o est\u00e1 cortado. O conte\u00fado \u00e9 renderizado fora da caixa do elemento
\nhidden<\/code> – O estouro \u00e9 cortado e o restante do conte\u00fado fica invis\u00edvel
\nscroll<\/code> – O estouro \u00e9 cortado e uma barra de rolagem \u00e9 adicionada para ver o restante do conte\u00fado
\nauto<\/code>– Semelhante a scroll, mas adiciona barras de rolagem somente quando necess\u00e1rio<\/p>\n
Nota: A overflow<\/code>propriedade funciona apenas para elementos de bloco com uma altura especificada.<\/span><\/p>\n
Nota: No OS X Lion (no Mac), as barras de rolagem s\u00e3o ocultas por padr\u00e3o e exibidas apenas quando est\u00e3o sendo usadas (mesmo que “estouro: rolagem” esteja definido).<\/span><\/p>\n
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estouro: vis\u00edvel<\/strong>
\nPor padr\u00e3o, o excesso \u00e9 visible, o que significa que n\u00e3o \u00e9 cortado e \u00e9 renderizado fora da caixa do elemento:<\/p>\n
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<!DOCTYPE html>\r\n<html>\r\n<head>\r\n<style>\r\ndiv {\r\n  background-color: #eee;\r\n  width: 200px;\r\n  height: 50px;\r\n  border: 1px dotted black;\r\n  overflow: visible;\r\n}\r\n<\/style>\r\n<\/head>\r\n<body>\r\n\r\n<h2>CSS Overflow<\/h2>\r\n<p>By default, the overflow is visible, meaning that it is not clipped and it renders outside the element's box:<\/p>\r\n\r\n<div>You can use the overflow property when you want to have better control of the layout. The overflow property specifies what happens if content overflows an element's box.<\/div>\r\n\r\n<\/body>\r\n<\/html>\r\n<\/pre>\n


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estouro: oculto<\/strong>
\nCom o hidden<\/code>valor, o excesso \u00e9 cortado e o restante do conte\u00fado \u00e9 oculto:<\/p>\n
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<!DOCTYPE html>\r\n<html>\r\n<head>\r\n<style>\r\ndiv {\r\n  background-color: #eee;\r\n  width: 200px;\r\n  height: 50px;\r\n  border: 1px dotted black;\r\n  overflow: hidden;\r\n}\r\n<\/style>\r\n<\/head>\r\n<body>\r\n\r\n<h2>CSS Overflow<\/h2>\r\n<p>With the hidden value, the overflow is clipped, and the rest of the content is hidden:<\/p>\r\n<p>Try to remove the overflow property to understand how it works.<\/p>\r\n\r\n<div>You can use the overflow property when you want to have better control of the layout. The overflow property specifies what happens if content overflows an element's box.<\/div>\r\n\r\n<\/body>\r\n<\/html>\r\n<\/pre>\n


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estouro: rolagem<\/strong><\/p>\n
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Definindo o valor como scroll, o excesso \u00e9 cortado e uma barra de rolagem \u00e9 adicionada para rolar dentro da caixa. Observe que isso adicionar\u00e1 uma barra de rolagem horizontal e verticalmente (mesmo que voc\u00ea n\u00e3o precise):<\/p>\n
<!DOCTYPE html>\r\n<html>\r\n<head>\r\n<style>\r\ndiv {\r\n  background-color: #eee;\r\n  width: 200px;\r\n  height: 100px;\r\n  border: 1px dotted black;\r\n  overflow: scroll;\r\n}\r\n<\/style>\r\n<\/head>\r\n<body>\r\n\r\n<h2>CSS Overflow<\/h2>\r\n<p>Setting the overflow value to scroll, the overflow is clipped and a scrollbar is added to scroll inside the box. Note that this will add a scrollbar both horizontally and vertically (even if you do not need it):<\/p>\r\n\r\n<div>You can use the overflow property when you want to have better control of the layout. The overflow property specifies what happens if content overflows an element's box.<\/div>\r\n\r\n<\/body>\r\n<\/html>\r\n<\/pre>\n


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estouro: auto<\/strong>
\nO auto<\/code>valor \u00e9 semelhante a scroll, mas adiciona barras de rolagem apenas quando necess\u00e1rio:<\/p>\n
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<!DOCTYPE html>\r\n<html>\r\n<head>\r\n<style>\r\ndiv {\r\n  background-color: #eee;\r\n  width: 200px;\r\n  height: 50px;\r\n  border: 1px dotted black;\r\n  overflow: auto;\r\n}\r\n<\/style>\r\n<\/head>\r\n<body>\r\n\r\n<h2>CSS Overflow<\/h2>\r\n<p>The auto value is similar to scroll, only it add scrollbars when necessary:<\/p>\r\n\r\n<div>You can use the overflow property when you want to have better control of the layout. The overflow property specifies what happens if content overflows an element's box.<\/div>\r\n\r\n<\/body>\r\n<\/html>\r\n<\/pre>\n


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estouro-x e estouro-y<\/strong><\/p>\n
As propriedades overflow-x<\/code>e overflow-y<\/code> especificam se o excesso de conte\u00fado deve ser alterado horizontal ou verticalmente (ou ambos):<\/p>\n
overflow-x<\/code>especifica o que fazer com as bordas esquerda \/ direita do conte\u00fado.
\noverflow-y<\/code>especifica o que fazer com as bordas superior \/ inferior do conte\u00fado.<\/p>\n
<!DOCTYPE html>\r\n<html>\r\n<head>\r\n<style>\r\ndiv {\r\n  background-color: #eee;\r\n  width: 200px;\r\n  height: 50px;\r\n  border: 1px dotted black;\r\n  overflow-x: hidden;\r\n  overflow-y: scroll;\r\n}\r\n<\/style>\r\n<\/head>\r\n<body>\r\n\r\n<h2>CSS Overflow<\/h2>\r\n<p>You can also change the overflow of content horizontally or vertically.<\/p>\r\n<p>overflow-x specifies what to do with the left\/right edges of the content.<br>\r\noverflow-y specifies what to do with the top\/bottom edges of the content.<\/p>\r\n\r\n<div>You can use the overflow property when you want to have better control of the layout. The overflow property specifies what happens if content overflows an element's box.<\/div>\r\n\r\n<\/body>\r\n<\/html>\r\n<\/pre>\n


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\n  Ap\u00f3s clicar em Copy ⇗
O código fica pronto para testar ou colar onde quiser no  CTRL+V<\/font>\n