I am trying to make a dropdown effect for one of my background images. I was able to do it using css3 but it's not complete.
The effect is supposed to be a curtain that drops down then sort of bounces back up a little. The problem with css3 is that I don't know how to do to transitions on the same property because the last one overrides the previous ones.
Here's my code:
ul#nav li a {
/* ADDS THE DROPDOWN CURTAIN TO THE LINKS BUT HIDDEN OFF SCREEN */
background: url(images/drape2.png) 0px -149px no-repeat;
/* CSS3 transitions */
-moz-transition: all 200ms ease-in-out;
-webkit-transition: all 200ms ease-in-out;
}
ul#nav li a:hover {
/* Action to do when user hovers over links */
background-position: 0px 0px; /* make drape appear, POOF! */
background-position: 0px -10px; /* make drape appear, POOF! */
}
Any help would be much appreciated.
You'll want to chain them with commas instead of a new line
For instance:
background-color 500ms linear, color 500ms linear;
Using cubic-bezier like this:
cubic-bezier(0, 0.35, .5, 1.3)
You can make an animation go backwards—or bounce a little.
Demo (Only works in Firefox)
Source
Edit: I also made you a Webkit only option, I don't know how compatible these two techniques are. It may also work in Firefox with the -moz browser prefixes, but I haven't tested it. This one uses keyframe animation as opposed to transitions.
Related
First of all, I'm using Volusion. Here's my website: www.gtsimulators.com
So if you're familiar enough with it, you will know that it is pretty limited for customization. Here's the thing I'm having trouble to figure it out:
I need to add a slight delay of at least half a second (0.5) when the mouse hover over the categories menu (please check website), so the dropdown won't be triggered immediately when hovering over the menu. I know it can be made with CSS or Javascript. Either way will be good for me.
Further information: As I previously mentioned, I have limited to no access to edit files. I've found the JS file for the navigation here (/a/j/vnav.js) and I can't edit it. Also, here's the CSS file for the navigation (/a/c/vnav.css) and I can't edit it as well.
I do have access to the main html, css and js files.
I will be glad to provide more information if needed.
Please help. Thanks!
UPDATE:
First time I've asked a question via Stackoverflow and the result was awesome thanks to Adam K.
Just added this code into my CSS file and it worked perfectly:
.vnav__subnav, .overlay{
transition: opacity 0.2s, max-height 99s;
display: block!important;
opacity: 0;
pointer-events: none;
max-height:0;
}
li:hover > .vnav__subnav,#display_menu_1:hover + .overlay{
opacity: 1;
pointer-events: auto;
max-height:9999px;
transition: opacity .5s, max-height 0s;
transition-delay: .5s;
}
Again, thanks Adam for the prompt response.
Try something like this
(Defining the actual delay only for the :hover case will make only turning red delayed. Turning back black will be instant. If you want transition delayed both ways, simply set transition-delay only for default state.)
<style>
a{
color:black;
transition:color 0s;
transition-delay:0;
}
a:hover{
color:red;
transition-delay:0.5s;
}
</style>
Well i wanted to show you generic usage.
You can inject this anywhere on your website. I don't think delay is really what you want to go for IMO. - Try this instead. (It works, already tried it in dev tools on your website)
<style>
.vnav__subnav, .overlay{
transition: opacity .5s, max-height 99s;
display: block!important;
opacity: 0;
pointer-events: none;
max-height:0;
}
li:hover > .vnav__subnav,#display_menu_1:hover + .overlay{
opacity: 1;
pointer-events: auto;
max-height:9999px;
transition: opacity .5s, max-height 0s;
}
</style>
This will make submenus and overlay on your website appear smoothly without any changes in javascript or HTML. Just few lines of css is all it takes ;)
I have three divs on the same line. You can check the example here: http://yoyo.ro/abw just scroll to the bottom of the page to the three boxes: Made to Measure, Instagram and Video Tracking.
When I click the left one, I want the other two to slide to the right and some text to appear. I tried to do it, but it seems that I complicated it so much and it isn't even smooth.
function hideTest(){
$(".instagram").addClass("slideout");
$(".videotracking").addClass("slideout");
$(".instagram").animate({left:"150%"},500);
$(".videotracking").animate({left:"150%"},500);
}
function showTest(){
$(".instagram").animate({left:"33.3%"},500);
$(".videotracking").animate({left:"66.6%"},500);
$(".instagram").removeClass("slideout");
$(".videotracking").removeClass("slideout");
}
$(".madetomeasure").on('click',function(){
var testwidth = $(this).find(".vc_btn3-container").width();
$(this).find(".vc_btn3-container").css("width", testwidth);
if(!$(this).hasClass("openslide")){
hideTest();
$(".madetomeasure").addClass("openslide");
$(this).find(".txtbox").animate({left:0},500);}
else {
$(this).find(".txtbox").animate({left:"-100%"},500);
$(".madetomeasure").removeClass("openslide");
showTest();
}
});
here is the css relevant to the JS
.txtbox{
-webkit-transition: all 0.3s ease-out;
-moz-transition: all 0.3s ease-out;
-o-transition: all 0.3s ease-out;
transition: all 0.3s ease-out;
width: 66.5%;
display:none;
left:-100%;
padding:0px 15px;
float:left;
position:relative;}
.instagram, .videotracking{position:static;}
.instagram {left:33.3%;}
.videotracking{left:66.5%;}
.instagram.slideout{position:absolute;}
.videotracking.slideout{position:absolute;}
.madetomeasure .button{
z-index:1;
height:300px;
background: url(http://yoyo.ro/abw/wp-content/uploads/2016/02/instagram.jpg) 100% 30% !important;
border: none !important;}
.madetomeasure.openslide {width:100%;}
.madetomeasure.openslide .wpb_wrapper {display:flex;}
.madetomeasure.openslide .txtbox {display:block;}
Thank you so much for the patience... :) I really appreciate it
As far as I know, your problem of smoothness is because:
jQuery change the inline styling of the animated element per frame. That is a lot of work and you can actually see the action if you inspect your element when it's animating.
CSS does poorly on animating left and right. There are many articles about this but here's one if you don't want to search: https://css-tricks.com/tale-of-animation-performance/
The Solution
Fiddle: https://jsfiddle.net/kv5twc64/1/
The solution is very common, and is used by many CSS libraries, a trick using .active, CSS animation and some JS.
Here I used the transition property for .card:
.card {
display:inline-block;
float:left;
max-width:33.333%;
position:relative;
cursor: pointer;
transition: 0.5s all ease-out;
}
If you don't know, transition will create a tweening effect when the elements' property has changed.
And here is the trick: By using ~ selecting the siblings in CSS and the transform property:
.card.active .desc {
transform: translateX(0);
}
.card.active ~.card {
transform: translateX(66.666vw);
}
There are several upsides on using CSS in this case:
You can simplify your JS. The JS became:
$(function(){
$(".card").eq(0).click(function(){
$(this).toggleClass("active");
})
})
You can improve webpage performance
You can have more choices on (simple) easing functions in CSS (jQuery only offers "swing" by default). Check this out: http://easings.net You can do something like this:
transition: all 600ms cubic-bezier(0.77, 0, 0.175, 1);
Hope this can help. But the lesson here is: Use CSS rather than JS when you can!
P.S. 66.666vw means 2/3 the width of the viewport width.
I am using impress.js for the first time and wanted to make a tweak. The original demo SEEN HERE has the slides become dim/transparent when they are not active. I have seen another impress.js presentation SEEN HERE where the image/slides remain opaque throughout the presentation except on the first slide (after that everything become opaque). How can I make a particular slide or image stay opaque through out the presentation?
in your css adding
.future : { opacity: 1.0 !important;}
.past : { opacity: 1.0 !important;}
or editing impress-demo.css
.impress-enabled .step {
margin: 0;
opacity: 0.3; <--- CHANGE THIS
-webkit-transition: opacity 1s;
-moz-transition: opacity 1s;
-ms-transition: opacity 1s;
-o-transition: opacity 1s;
transition: opacity 1s;
}
will change the opacity for different steps
Anyway, you can find the elements ,and choose the one u want and make a .css with jquery, for example:
$("body").find(".future")[0].css("opacity","1.0"); <-- This will change just the first future step found
Anyway, please read about css rules and specificity:
https://developer.mozilla.org/en-US/docs/Web/CSS/Specificity
Hope it helps
EDIT
I though u may also want to use :firs-child or :after (CSS selectors) will can also help you: http://quirksmode.org/css/selectors/firstchild.html
http://www.w3schools.com/cssref/sel_after.asp
I tried inspecting the elements for this website, but I could not figure out how they got the CSS triangle to move to different nav elements when a different page anchor is clicked.
See website: www.simple.com
The arrow is a CSS sprite contained in http://simple.com/img/sprites.png. It's set up in the CSS with transitions as follows:
#main-nav #nav-arrow {
-webkit-transition: left opacity;
-moz-transition: left opacity;
-o-transition: left opacity;
transition: left opacity;
-webkit-transition-timing-function: ease-in-out;
-moz-transition-timing-function: ease-in-out;
-o-transition-timing-function: ease-in-out;
transition-timing-function: ease-in-out;
-webkit-transition-duration: 0.3s;
-moz-transition-duration: 0.3s;
-o-transition-duration: 0.3s;
transition-duration: 0.3s;
width: 22px;
height: 14px;
position: absolute;
top: 60px;
text-indent: -10000px;
background: url("/img/sprites.png") no-repeat -577px -52px
}
That does the animation when the left property of the CSS changes. The left property is altered by Javascript hooked from the main navigation library that drives the site, NavSimple, in the (customised and minified) https://www.simple.com/js/brawndo.min2175719530.js. The more general NavSimple code to do the navigation also triggers custom Javascript that moves the arrow's left position to halfway along the active navigation element (it's subtracting eleven pixels because the arrow is 22 pixels wide):
this.nav_arrow.setStyle("left",d.getPosition(this.nav_wrapper).x+(d.getWidth()/2-11))}
And that's basically how it works. Nice site, very well-engineered, I'd say. (The navigation arrow is actually a div containing a letter "V", so it'll still look like an arrow even if the background images don't load, which I thought was a nice touch.)
Having said all that, I think this question might be a bit too specific to survive...
It doesn't seem like the triangle moves until the page has scrolled to the specified content. You could use the window.scrollY value to evaluate to which button the triangle should move to.
I'd guess the animation for the triangle is done by a function which gets called at both the window.onscroll event. And by a callback to the scrolling animation function triggered by the buttons.
Yeah there is some very cool stuff going on on that site. Its all CSS transitions, I would expect the use of Adobe Edge or LESS with something like that.
The brawdndo.js seems to be apart of moo-growing-input
demo here http://www.ohloh.net/p/moo-growing-input
source here https://github.com/3n/moo-growing-input
I'd bet it's JavaScript just animating the triangle, you couldn't possibly do this in pure CSS.
I am trying to redo the a tutorial I had posted links to in previous question to have as much HTML5 and CSS3 code. I read in some online article's that in HTML5 they are trying to get rid of the idea of Div tags, rather they are pushing for something known as section. Is that a correct observation. For example I have this section of code from the above tutorial.
https://skitch.com/android86/r67ey/dreamweaver
and what I am interested to know if I should be using div tags in my HTML5 code as well or is there a better way to do it rather than using Div's?
What I have in my HTML5 code at present is the following.
https://skitch.com/android86/r67ej/dreamweaver
Thanks for the group's valuable input.
a proof of concept for a sliding link over content (with display: block) on hover, using CSS3 transitions only.
NOTICE: this is a webkit (safari & chrome) only syntax, for the syntax for the rest of the browsers go here: http://css3.bradshawenterprises.com/transitions/
a simple element, with the following style:
a {
z-index: 100;
position: fixed;
-webkit-transition: all 1s ease-in-out;
display: block;
background-color: black;
width: 100%;
height: 500px; }
and the hover state style:
a:hover { height: 700px; }
The code submitted looks good, however I would include the extra lines to cover Firefox and Opera.
-moz-transition: all 1s ease-in-out;
-o-transition: all 1s ease-in-out;
transition: all 1s ease-in-out;
You can then use Modernizr (http://www.modernizr.com/) to cover all browsers with backup Javascript.
I would use something like this:
a.slideDown {
z-index: 100;
position: fixed;
display: block;
background-color: black;
width: 100%;
height: 500px;
-webkit-transition: top .2s ease;
-moz-transition: top .2s ease;
-o-transition: top .2s ease;
transition: top .2s ease;
top:5px;
}
a:hover.slideDown {
top:495px;
}
If you are including CSS3 as part of HTML5 (which you have to to allow animation!), have a look at: http://css3.bradshawenterprises.com/sliding/ . The jQuery isn't necessary, you could use the :target pseudo element instead.
For your case, just set a transition on the element, then change the height, or top value using the target selector.
It's probably around 4 lines of code if you only want it to work in newer browsers.
I'd agree with the comments about using CSS3 for transitions. I used this on a portfolio site and it looks fairly good. It's just a couple lines of code and if the browser doesn't support the transitions it will still display the content on hover, just without the animation.