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HTML

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Adding Classes

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About the <head>

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Insecure Resource

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CSS

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CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

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JavaScript

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Babel includes JSX processing.

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HTML 

              
                <!-- Das Menü ist nicht im Wrapper enthalten, da es fixiert ist. Fixierte Elemente lassen sich nicht in Elementen mit einer Perspektive anordnen.-->
<ul id="main_menu">
  <li><a href="#home" class="menu_link">Home</a></li>
  <li><a href="#intro" class="menu_link">Über mich</a></li>
  <li><a href="#angebote" class="menu_link">Angebote</a></li>
  <li><a href="#gallerie" class="menu_link">Beispiele</a></li>
  <li><a href="#kontakt" class="menu_link">Kontakt</a></li>
</ul>

<div class="wrapper">
  <header id="home">
    <div class="header_text">
      <h1>Willkommen auf meiner Webseite!</h1>
      <p>Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.
        <p>

          <a id="header_button" href="#intro">Mehr erfahren</a>
    </div>
  </header>

  <section id="intro">
    <h2>Über mich</h2>
    <p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea
      takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores
      et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.</p>

  </section>

  <section id="angebote">
    <h2>Meine Angebote</h2>

    <ul class="flex_container flex_list">
      <li class="flex_item">Lorem ipsum</li>
      <li class="flex_item">Lorem ipsum</li>
      <li class="flex_item">Lorem ipsum</li>
      <li class="flex_item">Lorem ipsum</li>
    </ul>
  </section>

  <section id="gallerie">

    <h2>Meine besten Arbeiten</h2>
    <p>Klicken Sie auf ein Bild, um mehr zu erfahren.</p>

    <div class="grid_container">

      <div class="box grid_item">
        <img src="https://picsum.photos/300/300">

      </div>

      <div class="box grid_item">
        <img src="https://picsum.photos/300/300">

      </div>

      <div class="box grid_item">
        <img src="https://picsum.photos/300/300">

      </div>

      <div class="box grid_item">
        <img src="https://picsum.photos/300/300">

      </div>

      <div class="box grid_item">
        <img src="https://picsum.photos/300/300">

      </div>

      <div class="box grid_item">
        <img src="https://picsum.photos/300/300">

      </div>
    </div>

  </section>

  <footer id="kontakt">
    <h2>Kontaktieren Sie mich!</h2>
    <p>Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.</p>
  </footer>

  </wrapper>
!

CSS 

              
                /* Erweiterung für parallaktisches Scrollen:*/
.wrapper { 
	  height: 100vh;
	  overflow-x: hidden;	 
    scroll-behavior: smooth;
    transform-style: preserve-3d;
    perspective: 1px;	  
}


header{
  transform-style: inherit;
}

header::after {
	  content: " ";
	  position: absolute;
	  top: 0;
	  right: 0;
	  bottom: 0;
	  left: 0;
	  transform: translateZ(-1px) scale(2);
	  background-size: cover;
	  background-position: bottom;
	  z-index:-1;
	  background-image: url('https://blaustern.eu/bokeh.png');
	  background-repeat: no-repeat;
 }
   
/****************************************/


/*Stern bedeutet: gilt für alle Elemente*/
* {
  margin: 0;
}

body {
  color: white;
  background-color: #2b2b5f;
  font-family: Arial, sans-serif;
  line-height: 2;
}

img {
  width: 100%;
}

h1,
h2 {
  font-weight: normal;
}

h1,
h2,
p {
  letter-spacing: 1px;
}

section {
  background-color: #2b2b5f;
  padding: 75px 30px;
  border-top: 1px dashed #ff8bc5;
}

section h2 {
  margin-bottom: 20px;
}

header {
  background-image: url(https://images.pexels.com/photos/627823/pexels-photo-627823.jpeg);
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  background-repeat: no-repeat;
  overflow: hidden;
  height: 100vh;
  position: relative;
  z-index: 1;
}

.header_text {
  text-align: center;
  color: #3a3a9d;

  height: 100%;
  display: flex;
  justify-content: center;
  flex-direction: column;
  align-items: center;

  padding: 30px;
}

.header_text p {
  font-size: 1em;
  margin-bottom: 50px;
}

.header_text h1 {
  line-height: 1.5;
}

#header_button {
  padding: 25px;
  background-color: #3a3a9d;
  border-radius: 10px;
  text-decoration: none;
  color: white;
  font-weight: bold;
  font-size: 0.8em;
  transition: padding 0.5s;
}

#header_button:hover {
  padding: 30px;
}

#main_menu {
  position: fixed;
  z-index: 999;
  top: 0;
  left: 0;
  padding: 0;
  width: 100%;
  background-color: #2b2b5f;
  display: flex;
  list-style-type: none;
}

.menu_link {
  color: white;
  display: block;
  padding: 10px;
  line-height: 10px;
  text-decoration: none;
  font-size: 0.65em;
}

#angebote {
  border-top: 1px dashed #84c3ff;
}

#angebote h2 {
  color: #84c3ff;
}

.flex_list {
  padding: 0;
  list-style-type: none;
}

.flex_list li {
  border-radius: 5px;
  padding: 20px;
  border: 1px solid #84c3ff;
  margin-bottom: 10px;
}

.flex_list li:hover {
  color: white;
  background-color: #84c3ff;
  border: 1px solid #84c3ff;
}

#gallerie {
  color: white;
}

#gallerie h2 {
  color: #ff8bc5;
}

footer {
  padding: 25px;
  text-align: center;
  border-top: 1px dashed #ff8bc5;
}

.box {
  position: relative;
}

.grid_container {
  margin-top: 20px;
}

@media screen and (min-width: 500px) {
  #main_menu {
    background: linear-gradient(
      to right,
      rgba(43, 43, 95, 1) 0%,
      rgba(43, 43, 95, 1) 50%,
      rgba(43, 43, 95, 0) 100%
    );
  }
}

@media screen and (min-width: 660px) {
  section {
    background-color: #2b2b5f;
    padding: 75px;
    border-top: 1px dashed #ff8bc5;
  }

  .header_text h1 {
    font-size: 3em;
  }

  p {
    font-size: 1.25em;
  }

  #header_button {
    font-size: 1em;
  }

  .flex_container {
    display: flex;
  }

  .flex_item {
    margin-right: 10px;
  }

  .grid_container {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr 1fr 1fr 1fr 1fr 1fr 1fr 1fr 1fr;
    grid-gap: 10px;
    line-height: 0;
  }

  .grid_item {
    grid-column: span 6;
  }
}

@media screen and (min-width: 900px) {
  .grid_item {
    grid-column: span 4;
  }
}

@media screen and (min-width: 1200px) {
  .grid_container {
    width: 80%;
    margin: 20px auto 0 auto;
  }
}
!

JS
!
999px

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