146 lines
4.4 KiB
Markdown
146 lines
4.4 KiB
Markdown
---
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id: 587d78a6367417b2b2512ade
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title: Create a More Complex Shape Using CSS and HTML
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challengeType: 0
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videoUrl: 'https://scrimba.com/c/cPpz4fr'
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forumTopicId: 301050
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---
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## Description
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<section id='description'>
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One of the most popular shapes in the world is the heart shape, and in this challenge you'll create one using pure CSS. But first, you need to understand the <code>::before</code> and <code>::after</code> pseudo-elements. These pseudo-elements are used to add something before or after a selected element. In the following example, a <code>::before</code> pseudo-element is used to add a rectangle to an element with the class <code>heart</code>:
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```css
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.heart::before {
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content: "";
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background-color: yellow;
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border-radius: 25%;
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position: absolute;
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height: 50px;
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width: 70px;
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top: -50px;
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left: 5px;
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}
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```
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For the <code>::before</code> and <code>::after</code> pseudo-elements to function properly, they must have a defined <code>content</code> property. This property is usually used to add things like a photo or text to the selected element. When the <code>::before</code> and <code>::after</code> pseudo-elements are used to make shapes, the <code>content</code> property is still required, but it's set to an empty string.
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In the above example, the element with the class of <code>heart</code> has a <code>::before</code> pseudo-element that produces a yellow rectangle with <code>height</code> and <code>width</code> of 50px and 70px, respectively. This rectangle has round corners due to its 25% border radius and is positioned absolutely at 5px from the <code>left</code> and 50px above the <code>top</code> of the element.
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</section>
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## Instructions
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<section id='instructions'>
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Transform the element on the screen to a heart. In the <code>heart::after</code> selector, change the <code>background-color</code> to pink and the <code>border-radius</code> to 50%.
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Next, target the element with the class <code>heart</code> (just <code>heart</code>) and fill in the <code>transform</code> property. Use the <code>rotate()</code> function with -45 degrees.
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Finally, in the <code>heart::before</code> selector, set its <code>content</code> property to an empty string.
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: The <code>background-color</code> property of the <code>heart::after</code> selector should be pink.
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testString: assert(code.match(/\.heart::after\s*?{\s*?background-color\s*?:\s*?pink\s*?;/gi));
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- text: The <code>border-radius</code> of the <code>heart::after</code> selector should be 50%.
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testString: assert(code.match(/border-radius\s*?:\s*?50%/gi).length == 2);
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- text: The <code>transform</code> property for the <code>heart</code> class should use a <code>rotate()</code> function set to -45 degrees.
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testString: assert(code.match(/transform\s*?:\s*?rotate\(\s*?-45deg\s*?\)/gi));
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- text: The <code>content</code> of the <code>heart::before</code> selector should be an empty string.
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testString: assert(code.match(/\.heart::before\s*?{\s*?content\s*?:\s*?("|')\1\s*?;/gi));
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='html-seed'>
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```html
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<style>
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.heart {
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position: absolute;
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margin: auto;
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top: 0;
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right: 0;
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bottom: 0;
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left: 0;
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background-color: pink;
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height: 50px;
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width: 50px;
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transform: ;
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}
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.heart::after {
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background-color: blue;
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content: "";
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border-radius: 25%;
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position: absolute;
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width: 50px;
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height: 50px;
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top: 0px;
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left: 25px;
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}
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.heart::before {
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content: ;
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background-color: pink;
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border-radius: 50%;
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position: absolute;
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width: 50px;
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height: 50px;
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top: -25px;
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left: 0px;
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}
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</style>
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<div class="heart"></div>
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```html
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<style>
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.heart {
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position: absolute;
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margin: auto;
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top: 0;
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right: 0;
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bottom: 0;
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left: 0;
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background-color: pink;
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height: 50px;
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width: 50px;
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transform: rotate(-45deg);
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}
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.heart::after {
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background-color: pink;
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content: "";
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border-radius: 50%;
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position: absolute;
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width: 50px;
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height: 50px;
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top: 0px;
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left: 25px;
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}
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.heart::before {
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content: "";
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background-color: pink;
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border-radius: 50%;
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position: absolute;
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width: 50px;
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height: 50px;
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top: -25px;
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left: 0px;
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}
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</style>
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<div class="heart"></div>
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```
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</section>
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