Example site
I have a site divided into your usual vertical sections. Header and footer both contain backgrounds with background-attachment: fixed. I have a slide-out nav, which you can see is activated on the first link. Everything works dandy except...
Issue:
Safari 6 (I'm not sure about 5.1, but it seems to be on Mac as my Windows Safari doesn't have the issue) has a nasty flicker upon animation. This can be resolved with the usual -webkit-backface hack HOWEVER upon using this, a new problem arises. The fixed background images start behaving very badly, and if you scroll/resize the browser enough, the images get distorted or content overlays improperly. Is there an alternative method I can use for this technique, or an actual fix?
HTML
<section>Hi CLICKME</section>
<section>hi</section>
<section>hi</section>
<section>hi</section>
<footer><p>I am some text</p></footer>
<aside class="menu">
I'm a menu.
</aside>
CSS
body {
background: #222;
transition: all 0.3s;
-webkit-backface-visibility: hidden;
}
body.bump {
transform: translate(-258px, 0);
}
section {
background: #CBA;
color: white;
line-height: 450px;
font-size: 32px;
height: 500px;
position: relative;
text-align: center;
text-shadow: 1px 1px 1px rgba(0, 0, 0, 0.3);
z-index: 1;
}
section:nth-child(2) {
background: #FAFAFA;
}
section:nth-child(3) {
background: #CCC;
}
section:nth-child(4) {
background: #ABC;
}
section:first-child {
background: url(http://placekitten.com/1600/500) center top;
background-attachment: fixed;
-webkit-backface-visibility: hidden;
}
#media all and (min-width: 73.75em) {
section:first-child {
background-size: cover;
}
}
footer {
background: url(http://placekitten.com/1400/500) center top;
background-attachment: fixed;
color: white;
font-size: 32px;
height: 500px;
}
#media all and (min-width: 73.75em) {
footer {
background-size: cover;
}
}
footer p {
position: fixed;
bottom: 200px;
left: 0;
text-align: center;
width: 100%;
}
aside.menu {
background: #222;
color: #FFF;
height: 100%;
padding-top: 30px;
position: fixed;
top: 0;
right: 0;
text-align: left;
transform: translate(516px, 0);
transition: all 0.3s;
width: 258px;
-webkit-backface-visibility: hidden;
}
.bump aside.menu {
transform: translate(258px, 0);
}
JS (using Jquery)
$('section a').click( function(e) {
$('body').toggleClass('bump');
});
I did a workaround, by applying the fixed background to the body, wrapping everything in body in another div (animating that instead, so it wasn't affecting the body background) and the footer stayed the same, since having scrolled that far there is no way to pop the sidebar out anyway (so no animation flicker to worry about).
Related
.checkbox-group {
position: relative;
padding-left: 30px;
input[type="checkbox"] {
height: 20px;
width: 20px;
margin: 0;
position: absolute;
opacity: 0;
left: 0;
z-index: 1;
&:checked {
+ .pseudo-checkbox {
background: red;
background: url("../../images/tick.png") no-repeat;
}
}
}
span.pseudo-checkbox {
height: 20px;
width: 20px;
display: inline-block;
border: 1px solid $input-border;
//background-color: #fff;
position: absolute;
left: 0;
}
}
When using sibling selector and background image, sass watch compiler goes into infinite loop (using laravel mix). Her i have included my sass. If I comment the background, the compilation works good.
Make sure to add the image to the original folder before compiling not the after compiling folder, i usually have the same problem but solve it by naming the before compiling img and the compiler will create new one it will name it images,
I would like to achieve what i wrote in the title, simultaneously.
What i have is a div that is width:100% (container) and contains 4 images inside of a div, 25% each (grid), with a description layer inside (on) it - called desc, for the overall dimensions, and span, for the mere text.
Here is the CSS:
.grid-container {
width: 85%;
margin-left: auto;
margin-right: auto;
}
.grid {
width: 25%;
float: left;
position: relative;
}
.grid img {
border-radius: 50%;
transition: .4s -webkit-filter linear;
-webkit-transition: background .5s ease 50ms;
transition: background .5s ease 50ms;
}
.grid img:hover {
filter: url(filters.svg#grayscale);
/* Firefox 3.5+ */
filter: gray;
/* IE6-9 */
-webkit-filter: grayscale(1);
/* Google Chrome & Safari 6+ */
background: rgba(168, 202, 217, .6)
}
.desc {
display: block;
position: absolute;
left: 26%;
width: 87%;
height: 100%;
top: 0%;
left: 0%;
border-radius: 50%;
}
.desc:hover {
background: rgba(168, 202, 217, .6)
}
.desc span {
width: 100%;
height: 100%;
text-align: center;
margin-top: 37%;
position: absolute;
left: 0;
top: 0;
font-size: 16px;
opacity: 0;
-webkit-transition: opacity .5s ease 50ms;
transition: opacity .5s ease 50ms;
color: #fff !important;
}
.desc span:hover {
opacity: 1;
}
So, what i want to achieve is to make the image go grayscale when hovered, while making the description visible. Description has a background color aswell (can i apply that to the image instead, along with the greyscale filter?)
The problem is that the description this way occupies the whole image, so the hover would be considered by the description only and not the image.
Any clues on how i can achieve what i want? Thanks for your attentio
Best regards
Simple, put both elements in the same container. For example,
.grid:hover img {
filter: url(filters.svg#grayscale);
}
.grid:hover .desc span {
opacity: 1;
}
If your description is an immediate following sibling of the image, you can use the immediate following-sibling selector:
.grid img:hover + .descr{display: block; background: whatever;}
(selects the element with the class="descr" once the mouse hovers over the image)
HTML structure for this to work:
<div>
<img>
<p class="descr">
</div>
I have a layout I am trying to make it responsive.
There is a 10px gap between the images the problem I am having is making the layout responsive. It does not keep the bottom edges aligned at certain sizes because the browser trying to retain the proportion on the horizontal images.
The big vertical image is 750px by 1200px. The small ones I have made 750px by 595px which is half the height minus half the height of the gap.
Any possible solution or ideas are welcome.
Try this (working codepen)
<div class="group">
<div class="sm"></div>
<div class="sm"></div>
</div>
<div class="lg"></div>
CSS
html {
overflow-y: scroll;
height: 100%;
box-sizing: border-box;
}
*,
*:before,
*:after {
box-sizing: inherit;
}
div {
width: calc(50% - 5px);
float: left;
}
.group {
margin-right: 10px;
}
.sm {
height: 200px;
margin-bottom: 10px;
width: 100%;
background: green;
border: 1px solid red;
}
.lg {
height: calc(400px + 10px);
background: green;
border: 1px solid red;
}
#media screen and (max-width: 700px) {
div {
width: 100%;
}
}
I'm trying to show a popup when someone clicks on a youtube thumbnail. This works fine in Chrome but the click event isn't firing in Firefox.
I've managed to cut the problem down to what I've got below (Fiddle here)
<div class="Youtube">
<img class="Thumb" src="http://img.youtube.com/vi/RsYlGFBEpM4/mqdefault.jpg" alt="Marrakech"/>
<img class="PlayButton" src="http://ec2-54-229-110-227.eu-west-1.compute.amazonaws.com/Content/images/VideoPlay.png" alt="Play button"/>
</div>
The attach is happening fine but the handler doesn't get called in Firefox
$(".Youtube").click(function () {
alert('clicked');
return false;
});
I suspect it's something to do with the positioning/layout of the div or images
.Youtube
{
margin: 5px;
width: 320px;
height: 180px;
overflow: hidden;
cursor: pointer;
border: solid 5px #f00;
position: relative;
}
div.Youtube img.Thumb {
position:relative;
z-index:-1;
}
.Youtube img.PlayButton {
height: auto;
width: 160px;
position:relative;
left:20px;
top:-160px;
z-index:-1;
opacity: .7;
}
Can someone point out my mistake? (I've just noticed the border of the div catches clicks are appropriate, just not any content)
Try : This updated jsFiddle - removed superfluous use of z-index property.
.Youtube
{
margin: 5px;
width: 320px;
height: 180px;
overflow: hidden;
cursor: pointer;
border: solid 5px #f00;
position: relative;
}
div.Youtube img.Thumb {
position:relative;
}
.Youtube img.PlayButton {
height: auto;
width: 160px;
position:relative;
left:20px;
top:-160px;
opacity: .7;
}
With a positive z-index set on .Youtube class works fine on FF too.
Code:
.Youtube
{
margin: 5px;
width: 320px;
height: 180px;
overflow: hidden;
cursor: pointer;
border: solid 5px #f00;
position: relative;
z-index: 1;
}
I'm searching for the reason on the net...
Demo: http://jsfiddle.net/IrvinDominin/6Zkua/
EDIT
I think the reason why is that we are defining all the elements in the same stacking context relative, but firefox in this context assume undefined if the z-index is not set so the element will be always at lower index.
Reference: https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Understanding_z_index/The_stacking_context
Explicitly adding z-index to Div makes it work on firefox
z-index:0
http://jsfiddle.net/LsqAq/3/
I have implemented the css as shown here: How to make twitter bootstrap menu dropdown on hover rather than click
However want to disable the dropdown on hover when the navbar collapses as it acts a bit buggy.
How can I do it?
You could try wrapping the CSS to disable the dropdown in a media query so that it is only disabling it at a certain page width... Reading up on media queries and trying to understand how bootstrap implements them is going to be one the keys to debugging this. Here's what I tried with the previous answer's fiddle.
http://jsfiddle.net/2Smgv/5544/
#media (min-width: 767px) {
.sidebar-nav {
padding: 9px 0;
}
.dropdown-menu .sub-menu {
left: 100%;
position: absolute;
top: 0;
visibility: hidden;
margin-top: -1px;
}
.dropdown-menu li:hover .sub-menu {
visibility: visible;
}
.dropdown:hover .dropdown-menu {
display: block;
}
.nav-tabs .dropdown-menu, .nav-pills .dropdown-menu, .navbar .dropdown-menu {
margin-top: 0;
}
.navbar .sub-menu:before {
border-bottom: 7px solid transparent;
border-left: none;
border-right: 7px solid rgba(0, 0, 0, 0.2);
border-top: 7px solid transparent;
left: -7px;
top: 10px;
}
.navbar .sub-menu:after {
border-top: 6px solid transparent;
}
}