Light up image on hover - html

Take a look at http://www.kickstarter.com.
When you hover over their logo, the image lights up. Is this effect doable without using a different image on hover?
My first idea was to use ::after:hover and add a white square with high transparency that covers the logo, but since my logo is placed on a blue background this would not work. Another idea is to set opacity to 0.9 and on hover set it to 1. But this makes the image look too dark by default.

You may be able to use the css image filters, like this:
img:hover {-webkit-filter: brightness(150%); }
This sometimes looks funny and will only work in webkit browsers, but it's the best solution I could think of. It'll allow you to keep your blue background as well.
Here's a jsfiddle showing the Kickstarter logo on a blue background.
http://jsfiddle.net/62bCB/
Cheers,

As far as I am aware you can't do what you require with pure CSS at this point, due to the blue background. I think your best bet is edit the image in photoshop to be its :hover brightness, and then use something like:
img {
opacity: 0.7;
}
img:hover {
opacity: 1;
}
Changing the opacity on hover will work:
img:hover {
opacity: 0.5;
}
Fiddle

The original CSS has:
img:hover {
filter: alpha(opacity=80);
opacity: .8;
}
Fiddle: http://jsfiddle.net/praveenscience/hfUpk/

You have a few choices depending on what browsers you need to support. You could make the logo a background image and then change the image on hover. (or sprite the image so that you don't get a flicker)
Or you could try a combination of CSS opacity and microsoft filters for older versions of IE.
http://www.w3schools.com/cssref/css3_pr_opacity.asp
Since you mention you have a dark background you can try some of the new CSS filters (saturation, brightness etc) but you're out of luck for IE.
http://www.html5rocks.com/en/tutorials/filters/understanding-css/

You could use this CSS code which makes lighting up a smoother transition than just instantly bright. Techpp.com and Techlivewire.com also use this same css or one similar to it on their frontpage featured sections. I could not get CSS to post on here since stackoverflow kept giving me errors so I put it in a pastie. http://paste2.org/1L9H2XsF

you can use opacity value between 0.1 to 1
very light and 1 value is dark (default)
img {
filter: alpha(opacity=100);
opacity: 1;
}
img:hover {
filter: alpha(opacity=70);
opacity: 0.7;
}

Related

Hover effect not working

I have a few photos and I want on hover I want to cover them with background: black; I want to cover the whole image with black for example. The hover effect just doesn't appear. I suspect the problem is in the CSS selectors.
Here is the fiddle: http://jsfiddle.net/20oomme4/3/
I tested your fiddle and it is working. I modified the colors and tested again - and it worked again. However, you images were broken links, so I could easily see the background color. My guess is that your images are opaque and, therefore, you cannot see the color that is BEHIND them.
Your best bet is to create two images - one with normal color and one with black color. Call the normal image "NormalImage.jpg" and call the black background one "NormalImage_black.jpg". Then, onhover, replace ".jpg" with "_black.jpg" - and on mouseout, replace "_black.jpg" with ".jpg". If you are having trouble doing this with css, try using Javacsript - and remember to load all images (but hide the backgorund ones) upon page_load, so that when someone hovers, the browser doens't have to load the image - it only needs to display it.
I'm unsure of what you want exactly. If you want a transparent background to cover the image.
jsfiddle
Other wise you would need to use transparent png's to change the white to black background on the image itself.
.img-responsive.products {
border: 1px solid black;
cursor: pointer;
}
figcaption {
position: absolute;
top: 0;
left: 0;
padding: 20px;
background: #2c3f52;
color: #ed4e6e;
}
figcaption {
height: 100%;
width: 100%;
opacity: 0;
color:#fff;
text-align: center;
backface-visibility: hidden;
transition: transform 0.3s, opacity 0.3s;
}
.col-sm-3:hover figcaption {
opacity: 0.4;
}
The hover effect is working as it is intended, the problem is the images are taking up the full area so you can't see any background effects. Try giving the images a padding:20px; to see the background changes. As mentioned above you will need to either create an image sprite or change the image to a transparent .png in order for the full background to change.
ex: http://jsfiddle.net/20oomme4/6/
Check this fiddle
This is the same CSS that you used, ie.
.img-responsive.products:hover {
background-color: black;
}
Only thing is that i've used a png image with no background. And as you can see in the fiddle your code works correctly.
So, As i mentioned in my comments, i would suggest you to use a png image without any background.

How do a make an image tilt forward on hover

I have been playing with transitions all morning and am at a road block. I have the need to have an image "tilt" forward when hovered over. Basically we have beer taps that when they hover over they want them to tilt as if they are being pulled down. I have played with a bunch of code but right now have nothing remotely close to post here. If anyone could give some help on how to accomplish this in css3 it would be greatly appreciated.
Below is a basic version (works in safari & chrome). You can play with the perspective values to change the effect.
I'm not sure where you were running into trouble, but the key points here are:
container to hold the rotated elements that will allow you to use perspective
perspective to change the overall look of the animation
transform-origin to set the rotation point of the image (using the bottom in the demo)
rotateX to rotate around the x axis - tilting the image toward/away from the viewer
html:
<div class="container">
<img src="http://placekitten.com/200/300" width="200" height="300"></img>
</div>
CSS:
.container {
-webkit-perspective: 1000px;
perspective: 1000px;
margin: 2em;
transform-style: preserve-3d;
}
img {
transition: all .5s ease;
-webkit-transform: rotateX(0deg);
-webkit-transform-origin-y: 300px; /* rotates from the bottom of the image */
}
img:hover {
-webkit-transform: rotateX(-40deg);
}
Demo jsFiddle
CSS Supports X and Y 3D rotations, but you cannot rotate on the Z axis (forwards and backwards) purely in CSS, maybe Javascript or jQuery would be able to do so.
For more on CSS rotation try reading up on it here: http://www.w3schools.com/css/css3_3dtransforms.asp
I would play around with something like CAMANJS or just create a second background image that tilts your existing image and use that on the hover event.

Opacity hover effect not working correct in IE

I have this simple hover effect http://www.mysecretathens.gr/Sera/index.html
#footer ul li:hover {
opacity: 0.7;
filter: alpha(opacity=40);
}
in the social media icons down in the footer, but in IE I see a blue-border all around each of the icons. How to fix that? Do you also see this?
I don't see it, but I suppose they are <a> anchor tags. So for IE you would have to add border:0px; for the anchor tags which are your social media icons.
If you have a link around an image IE automatically puts a border around it.
To remove blue border Add a { border: 0 } in your CSS
Add this to your css:
-ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=70)";
Edit: add it before filter: alpha(opacity=40);
if you have an link (anchor), it is the standard of internet explorer. in this case you have to reset the border with:
a {
border :none;
}
or
a {
border :0px;
}
and for the next time, i recommend you jsfiddle where you can put easily your code to run and debug it on the site for questions here.

CSS: opacity causes slight background color variation

I have set a specific background color for the body. I then want to use another div with the same background color but with opacity: .95 as a mask for content animating from the bottom of the page. This results in the masking div appearing to be a slightly different color. Is there any way around this?
See a screenshot here and the sample CSS below. I'm on Chrome 20 on Lion.
body
{
background: #3f3c45;
}
#bottommask
{
background: #3f3c45;
opacity: .95;
}
UPDATE: Please check this fiddle demonstrating the issue
UPDATED SOLUTION: It seems that at least in Chrome, using -webkit-backface-visibility: hidden; on the mask div solves the issue.
It it a matter of computing the effect of the 5% color gain from below.
Three ways:
calculating, or
trial/error with Firebug color picker, or
make a screenshot and sample the transparent color, then apply the sampled color to the non alpha background.
For the tattoo site, I've changed to a slightly different color, in order to accounting for the color shift of the opacity.
body {
background: #8d918f;
}

Transparent Form Background HTML

So I'm using this form from this site here
When I post the form in my website the entire form area is white background. Yet I keep looking through the code and I don't see anything specifying the color. Is there a way to make it so that it has an opacity of 0 or anything of the like? Thanks in advance.
Use this css rule:
#my_form
{
background-color: transparent;
}
Background color is the answer as previously posted by dotoree however as a side tip, use this CSS class to change the opacity of a div.
.transparent {
zoom: 1;
filter: alpha(opacity=50);
opacity: 0.5;
}
I would go with a rgba value for the background color.
background: rgba(255,255,255,0.5); - white with a 50% transparency.