{"id":6223,"date":"2017-02-03T12:43:49","date_gmt":"2017-02-03T11:43:49","guid":{"rendered":"http:\/\/www.espai.es\/blog\/?p=6223"},"modified":"2021-09-13T19:41:33","modified_gmt":"2021-09-13T17:41:33","slug":"height-100-css","status":"publish","type":"post","link":"https:\/\/www.espai.es\/blog\/2017\/02\/height-100-css\/","title":{"rendered":"Height 100%  m\u00e9todos alternativos con CSS3"},"content":{"rendered":"<p>Hola a todos y bienvenidos a un nuevo post de la <a href=\"http:\/\/espai.es\">Escola Espai.<\/a>\u00a0Hoy hablaremos de un tema que a todos los maquetadores nos trae de cabeza. El <strong>height 100%<\/strong>. \u00bfC\u00f3mo podemos especificar un <strong>height 100%<\/strong> de un elemento, con respecto a la altura m\u00e1xima de la pantalla del navegador o con respecto a su contenedor padre?<\/p>\n<div id=\"attachment_6232\" style=\"width: 1010px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.espai.es\/blog\/wp-content\/uploads\/2017\/02\/100x100.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-6232\" class=\"size-full wp-image-6232\" src=\"http:\/\/www.espai.es\/blog\/wp-content\/uploads\/2017\/02\/100x100.jpg\" alt=\"Height 100%\" width=\"1000\" height=\"644\" srcset=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2017\/02\/100x100.jpg 1000w, https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2017\/02\/100x100-300x193.jpg 300w, https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2017\/02\/100x100-768x495.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/a><p id=\"caption-attachment-6232\" class=\"wp-caption-text\">Height 100%<\/p><\/div>\n<p>Cuando empezamos a escribir css aprendemos una regla de oro: nunca vamos a determinar la altura de nuestros elementos, ya que esta altura vendr\u00e1 determinada por el contenido. Pero, \u00bfy si el contenido es demasiado corto y queremos que nuestra caja ocupe un height 100%? Habr\u00e9is notado que ahora est\u00e1 muy de moda utilizar un <em>slider full-screen<\/em> que presente nuestra p\u00e1gina web de forma impactante y vistosa. Tambi\u00e9n, por ejemplo, se est\u00e1n viendo cada vez m\u00e1s los men\u00fas laterales que ocupan todo el alto de nuestra web.<\/p>\n<p>\u00bfC\u00f3mo podemos hacer esto? Y lo que es peor: \u00bfC\u00f3mo hago que sea totalmente <em>responsive?<\/em> Uno podr\u00eda pensar: \u00abf\u00e1cil, ponemos un height 100%, tal como hacemos con el width y listo\u00bb.\u00a0Es una soluci\u00f3n, siempre y cuando la altura del elemento padre se haya especificado. Si no conocemos la altura del contenedor o \u00e9sta viene determinada por su contenido, el valor porcentual del height no funcionar\u00e1.<\/p>\n<p>&nbsp;<\/p>\n<h2><strong>Dos m\u00e9todos alternativos para lograr un height 100%.<\/strong><\/h2>\n<h3>Estableciendo alturas completas para elementos absolutos e introduciendo la medida vh.<\/h3>\n<p><strong>El primer m\u00e9todo<\/strong>\u00a0ser\u00eda aplicar una <strong>posici\u00f3n absoluta<\/strong> a nuestro elemento y jugar con los valores de <em>top<\/em> y <em>bottom<\/em>. \u00a0Si a un elemento en posici\u00f3n absoluta le damos al mismo tiempo un valor de 0 tanto para\u00a0<em>top<\/em> como para <em>bottom<\/em>, el elemento se estirar\u00e1 para cumplir con los dos valores que le estamos dando (podemos hacer lo mismo con las propiedades right y left). En otras palabras, le estamos pidiendo a un elemento que est\u00e9 tanto en la posici\u00f3n 0 de arriba como en la de abajo, la \u00fanica manera que tiene de hacernos caso es ocupando la altura total del elemento al cual es relativo.<\/p>\n<p>Un ejemplo de este c\u00f3digo ser\u00eda el siguiente:<\/p>\n<pre>\r\n.fullHeight {\r\n  position: absolute;\r\n  top: 0;\r\n  bottom: 0;\r\n}\r\n<\/pre>\n<p><strong>El segundo m\u00e9todo<\/strong> es utilizando la <strong>unidad\u00a0vh<\/strong>. Seguramente ya sabr\u00e9is que para determinar el \u00abtama\u00f1o\u00bb de un elemento en css podemos utilizar unidades como los p\u00edxeles, puntos, porcentajes o incluso em. Pero quiz\u00e1 no hay\u00e1is o\u00eddo hablar de las unidades\u00a0vh y vw. \u00a0Una unidad vh (<em>viewport height<\/em>) equivale a un 1% de la altura del <em>viewport<\/em> (el total de la pantalla del dispositivo que muestre nuestra web). 1vh = 1% del total de la pantalla, 100vh = 100%. Como os habr\u00e9is imaginado, la unidad vw es el equivalente para el ancho.<\/p>\n<p>Usando estas unidades podemos determinar una altura <em>fullheight<\/em> de la siguiente manera:<\/p>\n<pre>\r\n.fullHeight {\r\n  height: 100vh;\r\n}\r\n<\/pre>\n<p>El problema de este m\u00e9todo es su compatibilidad con los navegadores. Actualmente las medidas en vh y vw funcionan en: ie9+, Chrome 34+, Firefox 19+, Safari 7+, Android 4.4+ y iOS 6+. Debemos ser conscientes adem\u00e1s de que pueden causar problemas tanto en\u00a0Safari y Chrome de iOS 6 y 7.<\/p>\n<p>Como veis es muy sencillo, ambos m\u00e9todos funcionan sin necesidad de declarar la altura del contenedor padre y son totalmente responsive.<\/p>\n<p>\u00a1Espero que os haya sido de utilidad!<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hola a todos y bienvenidos a un nuevo post de la Escola Espai.\u00a0Hoy hablaremos de un tema que a todos los maquetadores nos trae de cabeza. El height 100%. \u00bfC\u00f3mo podemos especificar un height 100% de un elemento, con respecto a la altura m\u00e1xima de&#8230;<\/p>\n","protected":false},"author":26,"featured_media":6232,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_ef_editorial_meta_date_first-draft-date":"","_ef_editorial_meta_paragraph_assignment":"","_ef_editorial_meta_checkbox_needs-photo":"","_ef_editorial_meta_number_word-count":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[7],"tags":[12,13,14,15,78,523],"class_list":["post-6223","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-diseno-web","tag-css","tag-css3","tag-diseno-web-2","tag-html","tag-html5","tag-internet"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - 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