{"id":1324,"date":"2024-08-01T18:55:37","date_gmt":"2024-08-01T16:55:37","guid":{"rendered":"https:\/\/blog.sutilweb.eu\/?page_id=1324"},"modified":"2024-08-01T18:55:38","modified_gmt":"2024-08-01T16:55:38","slug":"41-opacidad-transparencia-con-css","status":"publish","type":"page","link":"https:\/\/sutilweb.eu\/index.php\/lenguajes\/css3\/css3-basico\/41-opacidad-transparencia-con-css\/","title":{"rendered":"41. Opacidad \/ Transparencia con CSS"},"content":{"rendered":"\n

La propiedad opacity<\/em> <\/strong>especifica la opacidad \/ transparencia de un elemento. Dicha propiedad puede tomar valores entre 0.0 y 1.0. El resultado quedar\u00eda as\u00ed:<\/p>\n\n\n\n\n\n\n\n

\"\"<\/figure>\n\n\n\n

Ejm<\/strong><\/p>\n\n\n\n

img {\n  opacity: 0.5;\n}<\/pre>\n\n\n\n
Efecto de transparencia con :hover<\/h2>\n\n\n\n
La propiedad opacity<\/em><\/strong> a menudo se usa junto con el selector :hover<\/em><\/strong> para cambiar la opacidad al pasar el mouse.<\/p>\n\n\n\n
Ejm<\/strong><\/p>\n\n\n\n
img {\n  opacity: 0.5;\n}\n\nimg:hover {\n  opacity: 1.0;\n}<\/pre>\n\n\n\n
Efecto de transparencia con :hover (2)<\/h2>\n\n\n\n
Este es otro ejemplo de transparencia con la pseudo-clase :hover<\/em><\/strong><\/p>\n\n\n\n
Ejm<\/strong><\/p>\n\n\n\n
<!DOCTYPE html>
<html>
  <head>
    <style>
      img:hover {
        opacity: 0.5;
      }
    <\/style>
  <\/head>
  <body>
    <h1>Image Transparency<\/h1>
    <p>
      La propiedad opacity se usa a menudo junto con el :hover Selector para
      cambiar la opacidad al pasar el mouse:
    <\/p>
    <img src=\"img_forest.jpg\" alt=\"Forest\" width=\"170\" height=\"100\" \/>
    <img src=\"img_mountains.jpg\" alt=\"Mountains\" width=\"170\" height=\"100\" \/>
    <img src=\"img_5terre.jpg\" alt=\"Italy\" width=\"170\" height=\"100\" \/>
  <\/body>
<\/html><\/pre>\n\n\n\n
Transparencia usando RGBA<\/h2>\n\n\n\n
Si no deseas aplicar opacidad a los elementos secundarios, como en nuestro ejemplo anterior, usa valores de color RGBA. El siguiente ejemplo establece la opacidad para el color de fondo y no para el texto.<\/p>\n\n\n\n
Ejm<\/strong><\/p>\n\n\n\n
div {\n  background: rgba(76, 175, 80, 0.3) \/* Green background with 30% opacity *\/\n}<\/pre>\n\n\n\n
Texto en una caja transparente<\/h2>\n\n\n\n
Ejm<\/strong><\/p>\n\n\n\n
<html>
  <head>
    <style>
      div.background {
        background: url(klematis.jpg) repeat;
        border: 2px solid black;
      }

      div.transbox {
        margin: 30px;
        background-color: #ffffff;
        border: 1px solid black;
        opacity: 0.6;
      }

      div.transbox p {
        margin: 5%;
        font-weight: bold;
        color: #000000;
      }
    <\/style>
  <\/head>
  <body>
    <div class=\"background\">
      <div class=\"transbox\">
        <p>This is some text that is placed in the transparent box.<\/p>
      <\/div>
    <\/div>
  <\/body>
<\/html><\/pre>\n\n\n\n
El resultado ser\u00eda<\/p>\n\n\n\n
\"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"
La propiedad opacity especifica la opacidad \/ transparencia de un elemento. Dicha propiedad puede tomar valores entre 0.0 y 1.0. […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":563,"menu_order":40,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-1324","page","type-page","status-publish","hentry"],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false},"uagb_author_info":{"display_name":"Sutil Web","author_link":"https:\/\/sutilweb.eu\/index.php\/author\/sutilweb\/"},"uagb_comment_info":0,"uagb_excerpt":"La propiedad opacity especifica la opacidad \/ transparencia de un elemento. Dicha propiedad puede tomar valores entre 0.0 y 1.0. […]","_links":{"self":[{"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/pages\/1324","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/comments?post=1324"}],"version-history":[{"count":3,"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/pages\/1324\/revisions"}],"predecessor-version":[{"id":1329,"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/pages\/1324\/revisions\/1329"}],"up":[{"embeddable":true,"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/pages\/563"}],"wp:attachment":[{"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/media?parent=1324"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}