The opacity of background for transparency can be made by using the rgba colors of CSS. CSS Backgrounds and Borders Module Level 3 Die Definition von 'background-color' in dieser Spezifikation. Dadurch haben ein Element und seine Kindelemente alle dieselbe Deckkraft relativ zum Hintergrund des Elements, … #p1 {background-color:rgba(255,0,0,0.3);} /* red with opacity*/ #p2 {background-color:rgba(0,255,0,0.3);} /* green with opacity */ #p3 {background-color:rgba(0,0,255,0.3);} /* blue with opacity */ Try it Yourself » Definition and Usage. Außerdem erlaubt es, Farben in verschiedene von CSS unterstützte Formate zu konvertieren. The last value in an rgba value is the alpha value. Try this for your background-color (remove/disable your existing code for bg color and opacity):.opacity {background-color: rgba(113, 113, 113, 0.7);} It will apply 70% opacity to the box and leave your text white. RGBA color values are an extension of RGB color values with an alpha channel - which specifies the opacity for a color. Colors may also be partially transparent, by specifying an opacity value (sometimes referred to as alpha in computer graphics parlance). An RGBA color value is specified with: rgba(red, green, blue, alpha) The alpha parameter is a number between 0.0 (fully transparent) and 1.0 (not transparent at all): Experiment by mixing the RGBA values below: background-color: rgba(50, 115, 220, 0.3); You can use rgba() color codes: the first 3 values are for rgb; the 4th value is for the alpha channel and defines the opacity of the color; The alpha value can go from zero 0 (transparent) to one 1 (opaque). Skip to main content. Articles; Videos; Almanac; Newsletter; Guides ; Books; Search Account. here I will discuss how to handle these properties effectively. Home / Code Snippets / Sass / Black and White Opacity Functions. Skip to main content. A better solution is to use rgba() which controls not only the color but the alpha transparency as well. Makes not much sense to not use rgba. css background image opacity without affecting child elements, gradient, color, black, rgba, text. Alpha is used to determine how opaque your shade should be. With the exception that IE8 accepts the filter, that can be somewhat of a workaround to transparency.. This means that you can create a transparent background without the limitation in background colors, that everything becomes transparent. How to Create Image Hover Overlay Effect Using CSS. it also changes the opacity in its child elements. CSS Transparenz • RGBA, HSLA, Opacity . The percentage of opacity is calculated as Opacity% = Opacity * 100 To set the opacity only to the background and not the text inside it. CSS-Tricks. Dieses Werkzeug vereinfacht es, beliebige Farben zu kreieren, um sie dann für das Internet zu verwenden. On the other hand if you will try to do this using the CSS opacity property, it will not only change the opacity of the background but also changes the opacity of all the child elements as well. Try and test HTML code online in a simple and easy way using our free HTML editor and see the results in real-time. While rgba is simple to understand, 8-digit hex is more difficult, as you need to provide a hex representation of a numeric value. Nach der Erweiterung des RGB Farbmodell um einen (vierten) Alphawert zu RGBA, werden im CSS Color Module Level 3 des W3C zwei neue Möglichkeiten der Farbangabe definiert. This can make the text inside a fully transparent element hard to read. There is no CSS property like "background-opacity" that you can use only for changing the opacity or transparency of an element's background without affecting its child elements. An RGBA color value is specified with: rgba(red, green, blue, alpha). 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