CSS:

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.grid {
 display: grid;
 grid-template-columns: 1fr 1fr 1fr 1fr;
 grid-template-rows: 1fr 1fr 1fr 1fr 1fr;
}

HTML:

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<div class="grid">
 <div>Content 1</div>
 <div>Content 2</div>
 <div>Content 3</div>
 <div>Content 4</div>
 <div>Content 5</div>
 <div>Content 6</div>
 <div>Content 7</div>
 <div>Content 8</div>
 <div>Content 9</div>
 <div>Content 10</div>
 <div>Content 11</div>
 <div>Content 12</div>
 <div>Content 13</div>
 <div>Content 14</div>
 <div>Content 15</div>
</div>

In CSS, you can write a media query to target certain devices in landscape mode with the following syntax:

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@media only screen and (orientation: landscape) {
  /* Add your CSS rules here */
}

For example, to hide a banner element on devices in landscape mode, you could use the following code:

css
 
 
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.banner {
  display: block;
}

@media only screen and (orientation: landscape) {
  .banner {
    display: none;
  }
}

For more information on media queries, refer to this guide from W3Schools: Media Queries Tutorial.

In Bootstrap 5, the use of @media has been simplified. It still supports the same media queries syntax as previous versions, but now @media will apply the same breakpoint values to all of the display options. For example, @media (max-width: 576px) {} will now apply to any display option such as xs, sm, md, lg, xl and xxl. Here's an example from the Bootstrap docs:

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/* Extra small devices (portrait phones, less than 576px) */
@media (max-width: 575px) { ... }

/* Small devices (landscape phones, 576px and up) */
@media (min-width: 576px) and (max-width: 767px) { ... }

/* Medium devices (tablets, 768px and up) */
@media (min-width: 768px) and (max-width: 991px) { ... }

/* Large devices (desktops, 992px and up) */
@media (min-width: 992px) and (max-width: 1199px) { ... }

/* Extra large devices (large desktops, 1200px and up) */
@media (min-width: 1200px) { ... }

You can find more information in the Bootstrap 5 documentation.

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const CityTemperature = () => {
  const city = "San Francisco"; 
  const temperature = "70°F"; 

  return (
    <p>The temperature in {city} is {temperature}.</p>
  )
}; 

Using Bootstrap, you can make an individual columns not take up any space when the display:none CSS property is set by using the order-* and d-* classes. For example:

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<div class="row">
    <div class="col-6 order-1 order-md-2 d-none d-md-block">Item 1</div>
    <div class="col-6 order-2 order-md-1">Item 2</div>
</div>

By setting the order-1 and d-none classes on the Item 1 column, it will not take up the space on mobile devices and tablets, but will on larger displays. On larger displays, it will appear in between Item 1 and Item 2 (via order-md-2). For more information, please see Bootstrap's documentation on responsive ordering.

javascript
 
 
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var childClass = document.querySelector('.search-section.no-border');
childClass.classList.add('enfant');
document.querySelector('.enfant').style.display = 'none';

In HTML, a list can be created using the <ul> tag. This tag defines an unordered list and every list item starts with the <li> tag.

An example of a list would look like this:

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<ul>
  <li>List item 1</li>
  <li>List item 2</li>
  <li>List item 3</li>
</ul>

Which would render as:

• List item 1
• List item 2
• List item 3

Using HTML and CSS, you can use the display property to place two or more images side-by-side. For example:

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<img src="image1.jpg" style="display:inline-block;">
<img src="image2.jpg"  style="display:inline-block;">

By setting the display property to inline-block, you can place two images next to each other on the same line. You can read more about this here.

You can use the display CSS property to hide a h2 element.

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h2{
  display: none;
}

For more information about the display property, see MDN web docs.

If you're using HTML and CSS you will need to wrap the columns with a <div> tag and set the display property to flex.

This will ensure that the columns appear within the same row. An example is shown below:

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.wrapper {
    display: flex;
}

Using CSS, you can set the display of two buttons and a search bar in the following way:

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.container {
  display: flex;
  justify-content: space-between;
}

.button {
  flex: 1;   
}

.search {
  display: flex;
  flex-basis: 41rem;
}

Using the flex box model, you can center an image within a container by setting the container's display style to flex, the justify-content style to center and the align-items style to center:

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.container {
  display: flex;
  justify-content: center;
  align-items: center;
}

With display: flex, you can divide the website in 3 vertical columns with the same size using a combination of flex-direction: row and flex: 1 on the child elements.

css
 
 
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.container {
  display: flex;
  flex-direction: row;
}

.column {
  flex: 1;
}

To center an <h2> vertically in the page, you can wrap the <h2> element in an outer <div> and apply the following CSS:

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div { 
  display: flex; 
  align-items: center;
}

You can create a box in CSS using the display property. For example, using display: block to create a block-level box:

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div {
  display: block;
  width: 500px;
  height: 400px;
  background-color: #cccccc;
  border: 1px solid #000000;
}

Read more about display here: https://www.w3schools.com/css/css_boxmodel.asp

You can use the CSS Grid Layout Module to make a grid responsive. You can assign a fraction unit for each column and row so that the grid will maintain its specified aspect ratio regardless of the size of the display. For example, the CSS below creates a responsive 3-column grid.

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.grid-container {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
}

You can use the display:inline-block; CSS property on an element to define the element's display type. To assign it to an element, you can place it inline in the element's style attribute, like this:

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<div style="display:inline-block;">My element</div>

Or you can assign it to the element using a separate stylesheet, like this:

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div {
   display:inline-block;
}

You can use the Date.now() function to get the current time in JavaScript and display it on a webpage. This code snippet demonstrates how it can be used to display current time:

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let now = Date.now();
let timeInMs = now - Date.parse("01 Jan 1970 00:00:00 GMT");    
document.body.innerHTML = new Date(timeInMs).toUTCString();

You can change the list and subheading default styling in HTML with CSS. To do so, use the display property to change the element's display mode and then use margin or padding to apply the desired distance to the element.

For example, if you want to modify the list style and add an extra margin, use this code:

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ul {
  display: block;
  margin: 12px 0;
}

You can also use classes or IDs to target specific elements and then apply the rules accordingly. For more information on styling lists, you can check out this W3Schools tutorial: https://www.w3schools.com/css/css_list.asp

You can center an img with css using the margin: auto command.

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img {
    display: block;
    margin: auto;
}

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.container {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
}

To make content inline within a HTML div element, you can use the CSS inline property. The syntax for this is:

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div {
  display: inline;
}

@media is a CSS media query which enables you to create responsive designs that display differently depending on the size of the screen they are viewed on. For example, the code below will display a paragraph in blue if the screen's width is greater than 500px:

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@media (min-width: 500px) {
  p {
    color: blue;
  }
}

To make a list horizontal, you can use display: inline; in the CSS of the list elements. For example, the following HTML and CSS will produce a horizontal list:

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<ul>
  <li>Item 1</li>
  <li>Item 2</li>
  <li>Item 3</li>
  <li>Item 4</li>
</ul>

css
 
 
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ul li {
  display: inline;
}

A common approach to displaying text when a button is clicked is to use JavaScript. Here is an example of how to do this:

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function displayText() {
  var text = document.getElementById("textField");
  text.style.display = "block";
}

The HTML code would look like this:

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<button onclick="displayText()">Click Me!</button>

<div id="textField" style="display: none;">
  This is the text that appears when you click the button.
</div>

When the button is clicked, the JavaScript will be executed and will display the contents of the div with the id "textField".