When I inspect this example from bootstrap, I find that the margin-bottom in navbar does not separate the navbar and the container.
That's because the navbar is fixed positioned and when you specify some element to be positioned fixed or absolute you are removing that item from document flow hence no effect on subsequent container. Try removing position:fixed on inspect from nav and you will see margin bottom in effect.
Related
Why does my navbar jump a little to the right when a drop-down is selected? Looks like some padding is missing on :hover perhaps. Any help would be appreciated. Thanks
http://www.85widening.com/default.html
It has to do with Bootstrap hiding the vertical scrollbar on body when the modal opens. It occurs only when you have a fixed navbar and body/modal content that require vertical scrolling.
Based on what I recall and found, it's a bug with Bootstrap 3 that I don't believe was ever resolved based on this GitHub issue.
Most workarounds seem to involve JS to add padding-right (like 15px) to the navbar when the modal opens or to override the overflow: hidden property the modal-open class that Bootstrap adds to body when you open a modal. The downside of this is you will have two vertical scroll bars (ugly). Either add the workaround or remove the fixed navbar. I haven't moved on to Bootstrap 4 yet but maybe they've addressed this.
i want to know if it's possible with bootstrap, to create the header with the logo and others informations, and then the navigation bar.
But the logo won't be fixe, only the navagation bar will be when it will be at the top of the page.
Here an example of header i'm trying to do with bootstrap
This partly depends on what you mean by "Header".
Often the "jumbotron" class is used as a header like this:
<div class="jumbotron"><img src='logo.png'>My Cool Company</div>
And the navigation bar is an independent element, specifically a navbar. It can be fixed on the page (scrolls with content) or Static on the screen (stays at the top or bottom)
Nabber example (always at the top):
<nav class="navbar navbar-fixed-top navbar-light bg-faded">
<a class="navbar-brand" href="#">Fixed top</a>
Link 1
Link 2
</nav>
You can find the other details on the Bootstrap page for Navbar:
Bootstrap Components navbar Placement
And the placement in this example is "navbar-fixed-top" so that it stays at the top of the screen, even when scrolling.
You may also want the navigation under the header, and want both to scroll until the navbar hits the top of the screen where it would then be fixed at the the top. This is sometimes called a sticky navbar. It can be done with jQuery, but at this time, I don't know of a way in Bootstrap without adding custom javascript.
Sticky Menu in jQuery - answer
If you do want the second option, without jQuery, ask another question on how to use Javascript switch from Fixed to Static when scrolling past the top of the screen.
thank you for your answer, but i think it s not my question, and i think my solution is not related to jumbotron.
if you look at the link i have give below, you can see that the logo of the site (w3school.com) is on the top when we are on the top of the page.
when we scrool down, this logo will disapear and only the nav bar (home, html, css, ...) will stay at the top.
I wish on this HOME page http://soulskydesign.com/RALE%20Engineering/Predlog_dizajna/index-2.php to hide slide controls (1,2,3,4...) when I moving down. How can I do it?
When I moving down now I can see slider controls behind main menu.
Sorry I miss read your question before. This is easily achievable using
z-index
The z-index property specifies the stack order of an element.
An element with greater stack order is always in front of an element with a lower stack order.
Note: z-index only works on positioned elements (position:absolute, position:relative, or position:fixed).
http://www.w3schools.com/cssref/pr_pos_z-index.asp
What you want to do is put your navigation bar that has your menu to a higher z-index so nothing will be shown in front because other elements have a lower z-index. z-index:99999 would fix your issue.
I want to collapse navbar when screen size is <=750px.
You can use Bootstrap's customization tool to build a modified version of Bootstrap. From here, you can alter #grid-float-breakpoint to another breakpoint defined by Bootstrap (ie, xs, sm, md, lg).
You need to modified according to highlighted red in below image.
When you're finished, navigate to the Download section, and click On Compile and Download
& then use it bootstrap js & CSS.
Did you not read the docs?
Changing the collapsed mobile navbar breakpoint
The navbar collapses into its vertical mobile view when the viewport is narrower than #grid-float-breakpoint, and expands into its horizontal non-mobile view when the viewport is at least #grid-float-breakpoint in width. Adjust this variable in the Less source to control when the navbar collapses/expands. The default value is 768px (the smallest "small" or "tablet" screen).
I have a relative div above a fixed one which acts like a navigation bar.
I want to be able to scroll past the relative div before the fixed div starts having to scroll here is my website.
as you can see from just scrolling on the site the sidebar doesn't work as intended.
Try using JavaScript to detect the scroll position of the window and then change the CSS to start scrolling like a fixed div.
Another tip, the the fixed div which contains your projects on the home page lays over your footer when you scroll to the bottom.
Use JavaScript to detect if the user is at the bottom of the page or not and then set the CSS of it to have a margin from the bottom of the page.
Hope I helped.