With new features like this, (and the like), you can also client-side validate things like length (e.g.
minimum password length or maximum characters in bio textarea) and even go full-on regex. Say you wanted password requirements like stuff here, which makes this not work great in Firefox and IE. Feel free to pick and choose stuff from here that works for you.
However it is always recommended to define a fallback color for the browsers that do not support the RGBA colors. filter: Alpha(Opacity=40); -ms-filter: "progid: DXImage Transform. #opacity1 #opacity2 #opacity3 #opacity4 I think we should assume that the only safe styles for future versions of IE8 would be to use the following combinations. The three images in the illustration below are all from the same source image.The only differences between them are the level of their opacity.I'd say if the form is short and an obvious pattern (like sign up or log in), you could use the placeholder visual pattern, but use real labels instead. You don't need to do any tricky cursor stuff, because it's all semantically wired up already. In order to do that, we'll need to know if the input is empty or not.
If they click the area taken up by the label, it will activate the input. We want to do stuff with :placeholder-shown is super useful for us here!
In addition to RGB CSS3 has introduced a new way RGBA to specify a color that includes alpha transparency as part of the color value. The RGBA declaration is a very easy way to set transparency for a color.
The first three numbers representing the color in RGB values i.e.
red (0-255), green (0-255), blue (0-255) and the fourth representing alpha transparency value between 0 to 1 (0 makes the color fully transparent , whereas the value of 1 makes it fully opaque).
One important characteristic to note about the RGBA transparency is that — the ability to control the opacity of individual color.
When using opacity on an element not only the background of the element that will have transparency, but all of its child elements become transparent as well.