Vorlage

Flexbox

by marusti

HTML

<div class="flexcontainer">
  <header>
    header
  </header>
  <nav>
    <input class="menu-btn" type="checkbox" id="menu-btn" />
    <span class="nav-wrapper">
  <a href="#" class="logo">Name oder Logo</a>
  <label class="menu-icon" for="menu-btn"><span class="navicon"></span></label>
    </span>
    <ul class="menu">
      <li><a href="#">Home</a></li>
      <li><a href="#">About</a>
        <ul class="sub-menu">
          <li><a href="#">Home</a></li>
          <li><a href="#">About</a></li>
          <li><a href="#">Clients</a></li>
          <li><a href="#">Contact Us</a></li>
        </ul>
      </li>
      <li><a href="#">Clients</a></li>
      <li><a href="#">Contact Us</a></li>
    </ul>
  </nav>
  <main>main</main>
  <footer>footer</footer>
</div>

CSS

@import url('https://fonts.googleapis.com/css?family=Open+Sans');
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0
}
html {
  height: 100%;
}
body {
  font-family: 'Open Sans', sans-serif;
  font-size: 16px;
  color: #333;
  line-height: 1.5;
    display: flex;
  flex-direction: column;
  height: 100vh;
}

a {
  color: #333;
}

.flexcontainer {
  display: -webkit-flex;
  display: flex;
  -webkit-flex-direction: column;
  flex-direction: column;
  -webkit-justify-content: flex-start;
  justify-content: flex-start;
}

nav span {
  display: flex
}

nav ul {
  list-style: none;
  overflow: hidden;
}

nav ul ul {
  margin-left: 20px
}

nav li a {
  display: -webkit-flex;
  display: flex;
  padding: 20px 20px;
  border-right: 1px solid #f4f4f4;
  text-decoration: none;
}

nav li a:hover,
nav .menu-btn:hover {
  background-color: #f4f4f4;
}

nav .logo {
  font-size: 2rem;
  padding: 10px 20px;
  text-decoration: none;
}

nav .menu {
  max-height: 0;
  transition: max-height .2s ease-out;
}

nav .menu-icon {
  cursor: pointer;
  margin-left: auto;
  padding: 32px 20px;
}

nav .menu-icon .navicon {
  background: #333;
  display: block;
  height: 2px;
  position: relative;
  transition: background .2s ease-out;
  width: 18px;
}

nav .menu-icon .navicon:before,
nav .menu-icon .navicon:after {
  background: #333;
  content: '';
  display: block;
  height: 100%;
  position: absolute;
  transition: all .2s ease-out;
  width: 100%;
}

nav .menu-icon .navicon:before {
  top: 5px;
}

nav .menu-icon .navicon:after {
  top: -5px;
}

nav .menu-btn {
  display: none;
}

nav .menu-btn:checked~.menu {
  max-height: 500px;
}

nav .menu-btn:checked~.nav-wrapper .menu-icon .navicon {
  background: transparent;
}

nav .menu-btn:checked~.nav-wrapper .menu-icon .navicon:before {
  transform: rotate(-45deg);
}

nav .menu-btn:checked~.nav-wrapper .menu-icon .navicon:after {
  transform: rotate(45deg);
}

nav .menu-btn:checked~.nav-wrapper .menu-icon:not(.steps) .navicon:before,
nav...