Section header shall be on the whole screen width. All that's to be centralized container♪You're asking for header Width and center:width: 1920px margin: 0 auto It's got to be done. container♪ For screens less than 1920px, another width of the container is required through the media.

How can you add center-block in class to img:<img src="..." class="d-block w-100 center-block" alt="..."> I've got a crusader on this code, it puts a slide downtown regardless of its size.How to use:margin-left: auto; margin-right: auto; for element img

The matter is closed. This is it. data-bs-toggle and data-bs-target They're used in Bootstrap 5. And in Bootstrap should be used data-toggle and data-target♪

Try to change the width of the element or describe white-space: nowrap

You @teran in the commentary rightly pointed to the source of the problem: no separate rows should be made for each of the four blocks, all blocks should be one row:[class^="col"] { padding: 50px; border: 1px solid red; }<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.1/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-+0n0xVW2eSR5OomGNYDnhzAbDsOXxcvSN1TPprVMTNDbiYZCxYbOOl7+AMvyTG2x" crossorigin="anonymous"> <div class="row"> <div class="col-lg-4 col-xl-3"> <div class="block"> </div> </div> <div class="col-lg-4 col-xl-3"> <div class="block"> </div> </div> <div class="col-lg-4 col-xl-3"> <div class="block"> </div> </div> <div class="col-lg-4 col-xl-3"> <div class="block"> </div> </div> <div class="col-lg-4 col-xl-3"> <div class="block"> </div> </div> <div class="col-lg-4 col-xl-3"> <div class="block"> </div> </div> <div class="col-lg-4 col-xl-3"> <div class="block"> </div> </div> <div class="col-lg-4 col-xl-3"> <div class="block"> </div> </div> </div>

That's right. Letters return like this in an old format, with a tabular plug and an old companion, until all the sandwiches, fluffs, etc.It allows me to be e-mails to be easy and not to put all the stuff on the mail.And the inclusion in the hat of all the scruples will not make it possible for anyone to not have a link to a virus in the letter.So forget about the boutstrup and the script and link, and look online about how the letters are right. The letters are not the same as the usual worm.You can, of course, samulate the butt and put a lot of codes in the g styles, like https://github.com/advancedrei/BootstrapForEmail but the users won't thank for that.

Only li must be inside foreach<ul class="nav nav-tabs" id="myTab" role="tablist"><?php foreach ($result as $idx => $res) { ?> <li class="nav-item"> <a class="nav-link <?= $idx === 0 ? 'active' : ''?>" id="<?= $res->id; ?>" data-toggle="tab" href="#<?= $res->tabs; ?>" role="tab" aria-controls="<?= $res->tabs; ?>" aria-selected="true"><?= $res->tabs; ?></a> </li><?php } ?> </ul> <div class="tab-content" id="myTabContent"> <div class="tab-pane fade show active" id="home" role="tabpanel" aria-labelledby="home-tab">...</div> </div>

In your example, the code has been misinformed if you see a mistake. col-md-6)It is better to bring them into different columns, an example:<link href="https://cdn.jsdelivr.net/npm/bootstrap@4.6.0/dist/css/bootstrap.min.css" rel="stylesheet" /> <form> <div class="form-row"> <div class="form-group col-md-6"> <label for="question" class="sr-only">Question</label> <textarea class="form-control" id="question" rows="4" placeholder="text"></textarea> </div> <div class="form-group col-md-6"> <label for="email" class="sr-only">E-mail</label> <input type="email" class="form-control" id="email" placeholder="E-mail"> <br> <button type="submit" class="btn btn-primary mb-2">Submit</button> </div> </div> </form>

It turns out that the system of these patters and their aidelics is all over the page page, and then we need to make different aideons for different branches.

Got it!One of the libraries wasn't connected!

You've got, of course, a fairyard full of connections. jquery-3.5.1.slim.min.jsand at the same time bootstrap.bundle.min.js + bootstrap.min.js♪But that's not why the menu doesn't work. You. data-toggle="callapse" with a mistake it says. collapse♪ And empty data-target="#" - here after the octotorpa, you have to point out the id hidden menu, in your case-- data-target="#navbarResponsive"♪<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/css/bootstrap.min.css" integrity="sha384-TX8t27EcRE3e/ihU7zmQxVncDAy5uIKz4rEkgIXeMed4M0jlfIDPvg6uqKI2xXr2" crossorigin="anonymous"> <script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script> <script src="https://cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-ho+j7jyWK8fNQe+A12Hb8AhRq26LrZ/JpcUGGOn+Y7RsweNrtN/tE3MoK7ZeZDyx" crossorigin="anonymous"></script> <script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.1/dist/umd/popper.min.js" integrity="sha384-9/reFTGAW83EW2RDu2S0VKaIzap3H66lZH81PoYlFhbGU+6BZp6G7niu735Sk7lN" crossorigin="anonymous"></script> <nav class="navbar navbar-expand-md navbar-light bg-light sticky-top"> <div class="container-fluid"> <a href="#" class="navbar-brand">Главная</a> <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarResponsive"> <span class="navbar-toggler-icon"></span> </button> <div class="collapse navbar-collapse" id="navbarResponsive"> <ul class="navbar-nav ml-auto"> <li class="nav-item"> <a href="#" class="nav-link">Вход</a> </li> <li class="nav-item"> <a href="#" class="nav-link">Регистрация</a> </li> </ul> </div> </div> </nav>

Default https://github.com/twbs/bootstrap/blob/3cf51c6ac95c4702efc632a7983019c71f77d4b3/scss/mixins/_grid.scss#L5 rules. margin-left and margin-right♪Add. m-0 for each .rowto remove the negative value that the row is stretching.<!DOCTYPE html> <html lang="en"> <head> <title>Bootstrap Example</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css"> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script> </head> <body> &lt;div class="container" style="background-color:#333"&gt; &lt;h2 class="text-light"&gt;Grid Test&lt;/h2&gt; &lt;div class="bg-primary"&gt; &lt;div class="row m-0"&gt; &lt;div class="col-4 p-1 border"&gt;Text1&lt;/div&gt; &lt;div class="col-4 p-1 border"&gt;Text2&lt;/div&gt; &lt;div class="col-4 p-1 border"&gt;Text3&lt;/div&gt; &lt;/div&gt; &lt;div class="row m-0"&gt; &lt;div class="col-4 p-1 border"&gt;Text4&lt;/div&gt; &lt;div class="col-4 p-1 border"&gt;Text5&lt;/div&gt; &lt;div class="col-4 p-1 border"&gt;Text6&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/div&gt; </body> </html>

It was possible to do this:He redesigned standard variables by his own and compiled.It was. $grid-breakpoints: ( xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px ) !default; $container-max-widths: ( sm: 540px, md: 720px, lg: 960px, xl: 1140px ) !default; It became: $grid-breakpoints: ( xs: 0 ); $container-max-widths: ( ); It's practically gone. There's only 3-4 class-xs references left.

Of course it's a hak, but I think the Tulbar means one size in height, 5 versions of it doesn't fight in the console, but I checked in 4 o'clock.<!-- CSS only --> <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0-beta1/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-giJF6kkoqNQ00vy+HMDP7azOuL0xtbfIcaT9wjKHr8RbDVddVHyTfAAsrekwKmP1" crossorigin="anonymous"> <!-- JavaScript Bundle with Popper --> <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0-beta1/dist/js/bootstrap.bundle.min.js" integrity="sha384-ygbV9kiqUc6oa4msXn9868pTtWMgiQaeYH7/t7LECLbyPA2x65Kgf80OJFdroafW" crossorigin="anonymous"></script> <div class="btn-toolbar d-flex"> <div class="btn-group btn-group-lg align-self-start"> <button type="button" class="btn btn-primary">lg</button> <button type="button"class="btn btn-primary">lg</button> </div> <div class="btn-group align-self-start"> <button type="button" class="btn btn-primary">btn</button> <button type="button" class="btn btn-primary">btn</button> </div> <div class="btn-group btn-group-sm align-self-start"> <button type="button"class="btn btn-primary">sm</button> <button type="button"class="btn btn-primary">sm</button> </div> <div class="btn-group btn-group-xs align-self-start"> <button type="button" class="btn btn-primary">xs</button> <button type="button" class="btn btn-primary">xs</button> </div> </div>

Try pointing https://getbootstrap.com/docs/4.0/utilities/position/ .upline { background-color: green; width: 300px; height: 100px } .parentline { background-color: blue; width: 300px; height: 200px } body { height: 2000px }<!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"> <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.6.0/dist/css/bootstrap.min.css"> </head> <body> <div class="container-fluid"> <div class="row dual"> <div class="col"></div> <div class="col parentline"> <div class="row upline position-fixed"></div> </div> </div> </div> <script src="https://code.jquery.com/jquery-3.5.1.min.js"></script> <script src="https://cdn.jsdelivr.net/npm/bootstrap@4.6.0/dist/js/bootstrap.bundle.min.js"></script> <script src="https://cdn.jsdelivr.net/npm/feather-icons@4.28.0/dist/feather.min.js"></script> </body>

Global variable lat and long are visible in maps init without further manipulation: http://jsfiddle.net/Lof0p1qg/ ymaps.ready(init); var lat = 55.8 var long = 37.7; function init () { ... But you're not working properly with the map. It's initialized and painted in a hidden fashion window from the beginning. And she needs the location coordinates of the center that aren't ready yet.You should ask the basic coordinates from the beginning, not after you pressed the table. It is therefore necessary to ask her some starting point to make a mistake. And then we'll have to reschedule the map centre through. https://yandex.ru/dev/maps/jsapi/doc/2.1/ref/reference/Map.html#method_detail__setCenter ♪

So the video isn't all high, if you don't want to have a white space..video { position: absolute; z-index: 0; width: 100% !important; height: 100% !important; -o-object-fit: cover; object-fit: cover; } Example: html, body { width: 100%; height: 100%; } header { width: 100%; height: 100%; background-size: cover; position: relative; z-index: 2 } .video { position: absolute; z-index: 0; width: 100% !important; height: 100% !important; -o-object-fit: cover; object-fit: cover; } .bsoft { font-family: 'Lobster', cursive; color: white; font-size: 22px; padding-top: 25px; text-shadow: 1px 1px 2px black; } ul, li { display: block; padding: 0; margin: 0; } .menu__item { margin: 0 25px; padding-top: 25px; } .menu__item a { font-size: 22px; color: #FFF5EE; font-weight: bold; text-decoration: none; font-family: 'Lobster', cursive; text-shadow: 1px 1px 2px black; }<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/css/bootstrap.min.css" integrity="sha384-TX8t27EcRE3e/ihU7zmQxVncDAy5uIKz4rEkgIXeMed4M0jlfIDPvg6uqKI2xXr2" crossorigin="anonymous"> <header class="header"> <video class="video" autoplay muted loop> <source src="https://www.w3schools.com/html/mov_bbb.mp4" type="video/mp4"> </video> <div class="container"> <div class="row"> <div class="col-lg-3"> <p class="bsoft">BSOFT</p> </div> <div class="col-lg-5 ml-auto"> <nav> <ul class="menu d-flex justify-content-center"> <li class="menu__item"> <a href="#"> Главная </a> </li> <li class="menu__item"> <a href="#"> Контакты </a> </li> <li class="menu__item"> <a href="#"> Карта </a> </li> </ul> </nav> </div> </div> &lt;div class="row"&gt; &lt;div class="col-lg-12"&gt; &lt;p class="dig"&gt;Первый digital-интегратор с&lt;br&gt; экспертизой в A.I. и Machine Learning&lt;/p&gt; &lt;/div&gt; &lt;/div&gt; </div> </header>

I've decided this way.<meta name="viewport" content="width=device-width, initial-scale=0.75"

It is not possible to change the text of this button. We can cover the field. <input> and initiate a dialogue on the opening of the file through JS.Either if you have to have a field for the files, do it. <input> Just invisible.Either there's a library. https://pqina.nl/filepond/ Bootstrap seems pretty good.

for section is tag sectionburger pushes away what's not very beautiful + when the css are closed, the properties are lost.anchors don't work.There's a lot of things that work for a bootstrap that's right, but you have to understand how it works.css has a cursor properties for visual change of the mouse visor over an element.js not availableIt's a very beautiful and a good version, based on the methodology.I can read my answer here. https://ru.stackoverflow.com/questions/1201978/html-%d0%a0%d0%b0%d0%b7%d0%bc%d0%b5%d1%82%d0%ba%d0%b0-%d1%81%d0%b0%d0%b9%d1%82%d0%b0-%d0%b8%d0%bb%d0%b8-%d0%b6%d0%b5-%d0%ba%d0%b0%d0%ba-%d1%81-%d0%bd%d1%83%d0%bb%d0%b5%d0%b2%d1%8b%d0%bc%d0%b8-%d0%b7%d0%bd%d0%b0%d0%bd%d0%b8%d1%8f%d0%bc%d0%b8-%d1%81%d0%b4%d0%b5%d0%bb%d0%b0%d1%82%d1%8c-%d1%81%d0%b0%d0%b9%d1%82/1205183?noredirect=1#comment2104540_1205183 Although this case, after studying the more advanced milestones, will have to be done a little differently, but it's in the next two months like I'm wearing a good version.