Safari OS X 10.10.4 Font Weight Issue While Scrolling - javascript

I'm facing right now weird problem that so far occurs just in Safari (8.0.7) under OS X (Yosemite 10.10.4). What is the problem? I ahve two menu bars. Both are relative and positioning works fine. The point is that when I scroll, 50 px from top I add class that makes second bar position fixed + top 0. This also works perfectly but... when this class is added I see that font-weight of the target bar is changed to something smaller.
(I'm taking about bar that has items: "Australia", "New Zealand" etc.)
I've recorded my screen: https://www.youtube.com/watch?v=H9_VmXDqqBE. Please watch in HD. Top right. Second bar contains names of some categories. If you will look closer you will see that font weight is changed and names are much more thinner than they should be.
I'm pretty much confident about my code and:
I don't manipulate font-weight explicitly.
This happens just in Safari (OS X)
Chrome and FF work good.
It's a minor issue but I want to learn something new and face it.
Below are some code snippets to give you general preview of the situation.
$(window).scroll(function()
{
var top = $(window).scrollTop();
if (top > 50) {
$('#blog_categories_container').addClass('sticky_top');
} else {
$('#blog_categories_container').removeClass('sticky_top');
}
});
CSS for the "blog_categories_container" bar and "sticky_top" class:
nav#blog_categories_container.container_white {
background-color: rgba(0,0,0,0.66);
}
nav#blog_categories_container {
left: 0;
list-style: none outside none;
margin: 0;
padding: 0;
position: absolute;
top: 50px;
width: 100%;
z-index: 1030;
}
nav#blog_categories_container ul {
float: right;
margin: 0;
overflow: auto;
padding: 0;
}
nav#blog_categories_container ul li {
float: left;
overflow: hidden;
padding: 5px 30px 5px 5px;
white-space: nowrap;
position: relative;
color: #cccccc;
}
nav#blog_categories_container ul li:last-of-type {
padding-right: 0;
}
nav#blog_categories_container.sticky_top {
position: fixed;
top: 0;
}
Can someone give me any hints? Thank you.

This generally happens when something causes the font smoothing to change (probably when you add/ remove the sticky_top class).
Try adding
-webkit-font-smoothing: antialiased;
to the nav#blog_categories_container section of your css file.
If that doesn't work try -webkit-font-smoothing: subpixel-antialiased;

Related

Button behind text only on mobile

I am trying to do a very simple quiz like this one:
https://www.sitepoint.com/simple-javascript-quiz/
I tried to make it more responsive and added this line:
<meta name="viewport" content="width=device-width,height=device-height,initial-scale=1.0"/>
It worked fine but when I add a long text on the alternatives of each question, the button "Next Question" stay behind the text, only on mobile (iphone 6, safari).
I tried to add a z-index: 1000; and nothing changed:
button{
font-family: 'Work Sans', sans-serif;
font-size: 22px;
background-color: #279;
color: #fff;
border: 0px;
border-radius: 3px;
padding: 20px;
cursor: pointer;
margin-bottom: 20px;
z-index:1000;
}
So, there's a few things wrong here. As said above you need to remove the height from .quiz-container and remove the absolute positioning from .slide.
What I would suggest is that you add display: none; to slide then your active style to display:block - this will correctly display the button where it should be. With that said, you will lose the fade effect. You'd need to add this CSS to get it back. Hope this helps!
.quiz-container {
position: relative;
margin-top: 40px;
}
.slide {
width: 100%;
opacity: 0;
display: none;
}
.active-slide {
opacity: 1;
display: block;
}
You set position: absolute to your quizz questions, so they will ignore the space of every element you set in HTML.
A large z-index will only put an element above another, that's the why you see the quizz questions above the button.
The problem will be solved if you increment the height of quiz-container on mobile screen (try use #media screen).
https://www.w3schools.com/cssref/css3_pr_mediaquery.asp
I recomend you to find another way to put your questions at the top of page instead using position: absolute
The problem really is that your quiz-container div has a fixed height of 200px, and you can't make it fluid because your slides have position:absolute, which removes them from the flow and prevents the parent growing in height accordingly.
So you need to re-think how to go about this.
An interesting approach would be to use flexbox, controlling which slide to show with the order property.
.quiz-container {
margin-top: 40px;
overflow: hidden;
}
#quiz{
display: flex;
}
.slide {
opacity: 0;
transition: opacity 0.5s;
/*gives each slide 100% width and prevents it from growing or shrinking*/
flex: 0 0 100%;
}
.active-slide {
opacity: 1;
/*sets the order to -1, so it's positioned before all other flex-items*/
order: -1;
}

Sub navigation disappears when I click on it in responsive view

I've created a sub navigation and when I click on it (using my jquery code), it scrolls down and i can hover over the links but they dont appear at all.
I tried looking into what could be causing the problem such as the color or background but I can't find out where i went wrong. I was messing around with the visibility and display of the element but I don't think theres a problem there, although I'm unsure.
To isolate where the problem of the code may lie, here is the sub navigation code:
ul {
padding: 0;
position: absolute;
top: 33px; right: 16px;
width: 150px;
display: none;
opacity: 0;
visibility: hidden;
#include transition('all .2s ease-in-out');
li {
display: block;
width: 100%;
a {
width: 100%;
display: block;
background: lighten(#27344C, 10);
color: #FFF;
padding: 0;
padding-right: 14px;
#include transition('all .2s ease-in-out');
}
}
li:hover {
a { background: lighten(#27344C, 5); }
}
}
I think the problem may actually be the javascript on this line when i edit the css styles:
$('#profileToggle').on('click', function() {
$('#profileList').slideToggle().css({'visibility': 'visible', 'display': 'block'});
$(this).addClass('active');
});
Here is the JSFiddle: http://jsfiddle.net/8xat4v97/1/
(starts line 112 of the scss code)
As with what #BillyNate had said,
the opacity is set to 0 for some reason in my sub navigations.
Removing this line fixed the issue! Thanks :)

Javascript Fixed Navigation Bar Jumping

I've been playing around with a fixed navigation bar, but I've noticed that when it "fixes" itself, the content below all jumps up on the page.
This is the JSFiddle I've been working on, if you look closely you'll notice that when the nav bar becomes fixed to the top of the screen, the content jumps up ~1 line. I've tried playing around with the Javascript:
var win = $(window),
fxel = $('nav'),
eloffset = fxel.offset().top;
win.scroll(function() {
if (eloffset < win.scrollTop()) {
fxel.addClass("fixed");
} else {
fxel.removeClass("fixed");
}
});
but I'm fairly certain the problem is in the CSS:
*{
margin: 0;
padding: 0;
}
nav {
width: 100%;
background: white;
height: 35px;
border-bottom: solid 1px #E8E8E8;
}
nav.fixed {
position:fixed;
top: 0;
right:0px;
left:0px;
z-index:999;
height: 30px;
border-bottom: solid 1px #E8E8E8;
padding-bottom: 5px;
}
h1{
font-family: 'Lobster', cursive;
font-size: 50px;
text-align: center;
}
Any solutions on how to fix the jumping would be really helpful.
For refrence, I'm trying to get something sort of like this where the very top of the page isn't part of the navbar.
When an element is set to position: fixed, it no longer takes up space on the page, meaning it won't push other elements down on the page. So as soon as your javascript adds the fixed class, the element no longer takes up space, and so the other content jumps up to take the place where it was.
To offset this, you may need to add another rule to add something like a top margin to the next element. The top margin will need to be the height of the (now) fixed element, plus any padding and margin in the fixed element:
https://jsfiddle.net/h6g33wne/8/
nav.fixed + * {
margin-top: 35px;
}

Android Chrome fixed menu popping in and out with url disappearing

EDIT: Here's a Youtube video that illustrates my problem:
http://youtu.be/OguwjZR_GdU
On my website Black Star Opal I've been trying to implement a sticky menu, much like this one Dansk Kids. I looked at the Dansk Kids website javascript and CSS: there seems to be no javascript involved in their menu (other than the removal of the logo underneath their sticky menu when they scroll). I want my sticky menu to be as smooth as theirs if possible (ie staying flush with the url bar as it pops in and out).
Here's my css for #carttrans, the menu div:
position: fixed;
-webkit-backface-visibility: hidden;
height: 49px;
top: 0px;
left: 0px;
background-color: rgb(255, 255, 255);
width: 100% !important;
z-index: 10000;
text-align: center;
margin-left: 0px;
padding-left: 7px;
border: 1px solid rgb(221, 221, 221);
border-left: none;
border-right: none;
border-bottom-style: solid !important;
border-bottom-width: 1px !important;
border-bottom-color: rgb(221,221,221) !important;
-webkit-transform: translateZ(0);
I also use this js code (only because the menu wouldn't display on iOS Safari without it, although I'm unsure why):
$(function() {
// grab the initial top offset of the navigation
var sticky_navigation_offset_top = $('#carttrans').offset().top;
// our function that decides weather the navigation bar should have "fixed" css position or not.
var sticky_navigation = function(){
var scroll_top = $(window).scrollTop(); // our current vertical position from the top
if ($(window).width() < 500)
{
// if we've scrolled more than the navigation, change its position to fixed to stick to top, otherwise change it back to relative
if (scroll_top > sticky_navigation_offset_top) {
$('#carttrans').css({ 'position': 'fixed', 'top':0, 'left':0 });
} else {
$('#carttrans').css({ 'position': 'fixed' });
}
}
};
// run our function on load
sticky_navigation();
// and run it again every time you scroll
$(window).scroll(function() {
sticky_navigation();
});
});
I even removed all the elements in the menu and just left the blank white bar there to see if it would do the same thing. It popped in and out awkardly just like before.
Any help with this would be amazing.
EDIT: As I said below, it's the URL bar popping in and out that seems to be disturbing my sticky menus. It could possibly be a repaint issue or slow down, because on other sites the disappearance of the url bar and the subsequent movement of the menu (for example, on sticky menu demos) is quite smooth and I'm doing/have tested them with the same url bar popping.
Cheers,
Rob
HTML
<header><h1>Sticky Header</h1></header>
<img src="large-image.jpg" width="782" height="2000" alt="Big Image" />
jQuery (remember to include the jquery library)
$(window).scroll(function() {
if ($(this).scrollTop() > 1){
$('header').addClass("sticky");
}
else{
$('header').removeClass("sticky");
}
});
CSS:
header{
position: fixed;
width: 100%;
text-align: center;
font-size: 72px;
line-height: 108px;
height: 108px;
background: #335C7D;
color: #fff;
font-family: 'PT Sans', sans-serif;
}
header.sticky {
font-size: 24px;
line-height: 48px;
height: 48px;
background: #efc47D;
text-align: left;
padding-left: 20px;
transition: all 0.4s ease;
}
REFERENCES:
http://www.webdesignerdepot.com/2014/05/how-to-create-an-animated-sticky-header-with-css3-and-jquery/
PREVIOUS SAME QUESTION ON STACK OVERFLOW:
CSS Sticky header
I used firebug for firefox and just added the following to your #carttrans ID i am assuming you only want this to stick? If so check the css below replace your #carttrans with the below and lemme know if that is what you want?
#carttrans {
background: none repeat scroll 0 0 white;
position: fixed;
text-align: right;
top: 40px;
z-index: 999;
}
Hi i looked at your youtube clip and i see that it could be that the jquery you are using is affecting your main div for the top section #carttrans make sure on this div that your css is marked as important for the top 0px !important so that the jquery won't be able to change it have a try and see if this works?

Responsive header with a weird webkit bug

I'm currently building a new website but there is a small hiccup on webkit browsers.
http://typework.github.io/green-life/
If you browse to the url above and resize the browser to mobile size.
Open the navigation (click only once on the hamburger) and resize back to full screen. You can see that my navigation moved to the left. When you keep resizing the browser you see that it moves more and more to the left.
In Firefox I do not have this problem, Safari and Chrome does.
I used plain and simple JavaScript:
$('.menu-link').on('click', function() {
$('.nav').toggleClass('active');
return false;
});
And simple display: block css:
.nav {
display: inline-block;
float: right;
padding: 31px 0 0 0;
margin: 0;
}
#media(max-width: 992px) {
.nav {
position: relative;
margin: 0;
padding: 0;
display: none;
clear: both;
width: 100 %;
}
.nav.active {
display: block;
}
I do not seem to find the bug however. Any ideas?
I think there is a problem in the nav li, change it display:inline-block.
.nav li {
display: inline-block;
padding-left: 30px;
text-align: right;
}
I think this will solve your issue.
also make it display block in media query

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