You can use the display: inline-block property in CSS to put two

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li { 
  display: inline-block; 
}

You can use the :hover pseudo-class to create a mouseover effect on elements and change their color, including for a multicolored SVG icon.

Using CSS, you can do this like shown in the example below:

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.multicolor-svg {
  fill: #1e90ff;
}

.multicolor-svg:hover {
  fill: #d81313;
}

You can find more details on how to change a SVG color on hover with CSS here.

To use box shadow in CSS you must specify values for the box-shadow property. The syntax for the box-shadow property is:

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box-shadow: [horizontal offset] [vertical offset] [blur radius] [optional spread radius] [color];

More details and examples can be found on the MDN docs.

You can try using the object-fit CSS property to ensure that images scale to the size of their containing elements. In your example, you could use the following code to make sure that the image is proportionally resized to fit within the h2 element's border:

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h2 img {
    object-fit: cover;
}

To set a full page background in CSS, use the background-size and background-position properties. When background-size is set to cover, it will scale the image to cover the entire container. You can then control the vertical alignment of the image using the background-position property. The syntax is background-position: horizontal-position vertical-position;.

For example:

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body {
    background-image: url("background-file.jpg");
    background-size: cover;
    background-position: center top;   
}

You can add a background image to an HTML element using the background-image CSS property.

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.element { 
  background-image: url('image.jpg');
}

You can set the transparency of an element with a linear gradient by using the rgba value for the color property. CSS rgba stands for red green blue alpha and is used to define the transparency of an element.

Syntax:

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background: linear-gradient(color1, color2, color3, ... ), rgba(red, green, blue, alpha);

For example:

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background: linear-gradient(#F26101, #08AEEA), rgba(0,0,0,0.2);

You can change the alpha value in the rgba value to adjust the transparency level.

More information can be found here: CSS linear-gradient.

In CSS, you can set a background opacity with a linear gradient using the background property and the rgba() function.

Example code to set a background opacity of 50% using a linear gradient:

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background: linear-gradient(to right, rgba(255, 0, 0, 0.5), rgba(0, 0, 255, 0.5));

This is possible to do with CSS Flexbox. To make two text blocks the same size, you can wrap them in a div and add display: flex to the parent div. Then, add flex-basis: 100% to the child elements to make them the same size, even if they contain different amounts of text.

CSS:

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.parent {
  display: flex;
}

.child {
  flex-basis: 100%;
}

HTML:

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<div class="parent">
  <div class="child">
    // text block 1
  </div>
  <div class="child">
    // text block 2
  </div>
</div>

You can create a scrollable image container by wrapping the image in a <div> with the css property overflow-y set to scroll. For example:

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div.image-container {
  overflow-y: scroll;
}

You can also use the max-height css property to set an upper limit on how tall the image can be. This helps limit how much the user has to scroll:

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div.image-container {
  overflow-y: scroll;
  max-height: 400px;
}

You can read more about creating scrollbars with css here: https://www.w3schools.com/css/css_overflow.asp.

Underlines on links can be enabled or disabled by CSS styles. Depending on the browser, the exact command used may vary, but a typical command to enable the underline is text-decoration: underline. You can add or remove this in the CSS stylesheet or style tag of the webpage.

To horizontally center an unordered list you can use the following code snippet:

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ul {
  display: flex;
  justify-content: center;
}

You can list elements horizontally by setting the display CSS property to inline or inline-block:

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ul {
  display: inline-block;
}

Elements will be listed in the same order as they appear in your HTML code.

Responsive web design is a technique for automatically resizing a website to fit different device screens. This involves defining breakpoints, where the layout of a website is changed depending on the size of a browser window. CSS media queries are commonly used to make a website responsive, where a website’s design is laid out differently depending on the size of the screen or viewport.

To add a box shadow to an element in CSS, use the box-shadow property. You can specify the size, color and offset of the box shadow.

For example, the following will add a grey box shadow of 8px 8px 16px 0px to the element:

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box-shadow: 8px 8px 16px 0px #888888;

In CSS, you can make an element on your page expand when you hover over it. To do this, you can use the :hover selector.

Here's an example of how you could use :hover to expand a button element:

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button {
  width: 70px;
  height: 30px;
}

button:hover {
  transform: scale(1.2);
}

In this example, the transform: scale(1.2); line tells the browser to scale the element up to 120% of its original size when the mouse hovers over it.

In CSS Grid, a common way to create spacing between items is to use the grid-gap property. This allows you to define the amount of space between grid items in either a horizontal or vertical direction. For example, to create a 20px gap between grid items in both the horizontal and vertical direction, you would add this code to your CSS file:

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.grid-container {
  display: grid;
  grid-gap: 20px;
}

Using CSS, you can make a H1 font weight thin using the following code:

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h1 {
   font-weight: 200;
}

In Markdown, bullets can be removed from a list by using the \ character before the list. For example:

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\* Item 1
\* Item 2
\* Item 3

This will result in:

• Item 1
• Item 2
• Item 3

To change the look of a button in CSS, you need to modify the CSS class of the button. You can modify the font size, background color, border style, border radius, etc. For example, if you want to make the font size of a button to be 14px and change its background to yellow, use the following code:

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.button {
    font-size: 14px;
    background-color: yellow;
}

You can use the background CSS property to specify color, image and other background styles. In its most basic usage, you can set the background color like this:

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body {
    background: #9e9ea0;
}

More information can be found on the Mozilla Developer Network website here.

The z-index property in CSS is used to determine the stack order of an element. It specifies the order that an element will appear in when it is overlapping other elements. By default, elements have a z-index of 0. A negative z-index will place an element behind its parent in the stacking order and a positive z-index value places it in front of its parent in the stack order. Here is an example to demonstrate how z-index works in CSS:

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.elem1 {
  position: absolute;
  z-index: 0;
  background-color: #C5DBF6;
}
.elem2 {
  position: absolute;
  z-index: 1;
  background-color: #FFD37F;
} 

In this example, elem2 will be placed in front of elem1 because it has the higher z-index. For more information, see the MDN Documentaion here.

In CSS, the background shorthand property is used to specify a number of background-related properties in one declaration. The background property is a shorthand syntax for setting the individual properties background-image, background-position, background-size, background-repeat, background-origin, background-clip, background-attachment, and background-color simultaneously:

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background: image|position|size|repeat|origin|clip|attachment|color|initial|inherit;

For example, to set a background image and color, you can set the background property in this way:

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background: url(backgroundImage.png) no-repeat fixed #dddddd;

The following table outlines the values you can use as part of the background shorthand property:

For more information, check out the MDN web docs guide on the background shorthand.

Padding is an arrangement of extra space around a block of text, table, or other elements in a digital document. Padding can help to create a visual hierarchy as well as create space between elements. Padding is also used to create space between text and objects or other elements in a document. This can be useful for creating a more user-friendly interface. Different CSS properties like padding-top, padding-right, padding-bottom and padding-left can be used to define the lengths of the four different sides of padding. More information can be found in this article.

Typically, there are two criteria for when to use an id attribute instead of a class attribute.

1. When the element appears only once on the page: An id attribute should be used when an element only appears once on the page. This makes it easier to refer to the element when writing CSS or JavaScript code.

2. When the element requires a unique style: If your page includes multiple elements that have a similar style but require some subtle differences (for example, different font size, color, etc.), you can use an id to apply a unique style to the element.

For more detailed information about when to use an id attribute instead of a class attribute, check out this guide from w3schools: https://www.w3schools.com/css/css_id_class.asp