:root {
  --text-color: #fff;
  --bg-color: #171a21;
  --second-bg-color: #1b2838;
  --main-color: #66c0f4;
  --other-color: #c7d5e0;
  --other-color2: #107c10;
  --other-color3: #2a475e;

  --h1-font: 4.5rem;
  --h2-font: 2.9rem;
  --h3-font: 1.5rem;
  --p-font: 1rem;
}

body {
  color: var(--text-color);
  background: var(--bg-color);
}

 header
{
    z-index: 999;
    position: fixed;
    background: rgba(255, 255, 255, 0.1);
    top: 0;
    left: 0;
    width: 100%;
    padding: 11px 80px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: 0.5s ease;
  }
  
  header.sticky
  {
  background: var(--bg-color);
    padding: 11px 80px;
  } 
  
  header .brand
  {
    color: #fff;
    font-size: 1.8em;
    font-weight: 700;
    text-transform: uppercase;
    text-decoration: none;
  }
  
  header .navigation
  {
    position: relative;
  }
  
  header .navigation a
  {
    color: #fff;
    font-size: 1em;
    font-weight: 500;
    text-decoration: none;
    margin-left: 30px;
  }
  




  .navlist {
    display: flex;
}

.navlist a {
    font-size: var(--p-font);
    font-weight: 500;
    color: var(--other-color);
    margin-left: 40px;
    transition: all .50s ease;
}

.navlist a:hover {
    color: var(--main-color);
    text-shadow: 3px 3px 20px var(--main-color), -2px 1px 30px var(--text-color);
}




 section
{
  padding: 100px 200px;
} 

.Accueil{
  position: relative;
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: url(/Back-End/image/data-center.webp)no-repeat;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

.Accueil .content{
  max-width: 800px;
}

.Accueil .content h2 span{
  font-size: 2.6em;
  font-weight: 600;
}



.btn{
  color: #fff;
  background: #3a6cf4;
  font-size: 1em;
  font-weight: 600;
  display: inline-block;
  padding: 10px 20px;
  text-transform: uppercase;
  text-decoration: none;
  letter-spacing: 1px;
  border-radius: 2px;
  margin-top: 30px;
  transition: 0.5s ease;
}

.btn:hover{
  background: #235bf6;
}