* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    text-decoration: none !important;
  }
  html {
    font-size: 62.5%; /* 1rem = 10px*/
  }
  
  body {
    font-size: 1.4rem; /* soit 14px*/
    font-family: Arial, Helvetica, sans-serif;
  }
  h1 {
    font-weight: bolder;
    margin: 15rem 0 7rem;
    text-transform: uppercase;
    text-align: center;
  
  }
  
    
  .white {
    color: #ffff;
  }

  /* ***************************  Menu desktop   ***************************** */

/*STYLE MENU DESKTOP*/
.navbar-desktop {
    height: 8rem; /*80pixels*/
    line-height: 8rem; /*centre verticalement*/
    text-align: center; /*centre horizontalement*/
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bolder;
    position: fixed;
    width: 100%;
    background-color: #fff;
  }
  
  /* style des liens*/
  .navbar-desktop a {
    padding: 5rem;
    color: #61b3ff;
  }

  .switch {
    width: 90px;
    height: 30px;
    background-color: #61b3ff;
    border-radius: 15px;
    position: relative; /*Permet de positionner l'icône en absolute*/
    border: 1px solid #61b3ff;
    padding: 1rem;
  }
  .switch i {
    position: absolute; /*par rapport à la DIV switch*/
    color: #ffd363;
    top: -23px;
    right: 23px;
    font-size: 1.8rem;
  }
  .container-fluid {
    background-color: #cbe6ff;
    display: flex;
    justify-content: center;
    flex-direction: column;
    align-items: center;
    text-align: center; 
  }


/* **************************** DARK MODE ************************************* */

.container-change {
  background-color: #2c3c54;
}
.switch-change {
  background-color: #1e2939;
  border: 1px solid #1e2939;
}

  .switch .btn {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background-color: white;
    border: 1px solid #61b3ff;
    position: absolute; 
    top: -1px;
    left: -1px; 
  }
  
  .switch .btn:hover {
    background-color: white !important  ;
  }



  /* ***************************  Menu mobile  ***************************** */

/*STYLE MENU MOBILE*/
.navbar-mobile {
    display: none;
  }
  .navbar-mobile .bi-list {
    position: fixed;
    z-index: 9999;
    top: 9px;
    right: 15px;
    font-size: 4rem;
    color: #1e2939;
  }
  .navbar-mobile-menu {
    transition: top 0.9s;
    background-color: #fff;
    height: 100vh;
    position: fixed;
    top: -100vh;
    left: 0;
    width: 100%;
  }
  .navbar-mobile .navbar-mobile-list {
    display: flex;
    height: 100vh;
    flex-direction: column;
    align-items: center;
    justify-content: center;
  }
  .navbar-mobile .navbar-mobile-list a {
    font-size: 3rem;
    font-weight: 800;
    color: #1e2337;
    padding: 2rem;
  }
  
  /* position de l'icone */
  .navbar-mobile .switch i {
    top: 1px;
  }


  /*Media queries*/
@media screen and (max-width: 992px) {
    .navbar-desktop {
      display: none;
    }
    .navbar-mobile {
      display: block;
    }
  }

  .nav-dark {
    background-color: #333;
  }
  .lienDarkMode {
    color: #ffff !important;
  }





    
/* ****************************** Slider ********************** */

.slider {
    margin-top: 5rem;
    padding: 10rem;
    width: 100%;
    background-image: url(../img/concrete_seamless.png);
  }

  .outils > div {
    border: 1px solid #333;
    padding: 2rem;
    background-color: #1e2337;
    color: #fff;
  }

  .slider > div:nth-child(2) {
    width: 500px;
    height: 500px;
  }
  .slider img {
    margin-top: 5rem;
    transform: rotate(-8deg);
    border: 20px solid #fff;
    border-radius: 10px;
    box-shadow: 0px 2px 16px 1px rgba(0, 0, 0, 0.75);
  }


  /* ****************************** progress barre ********************** */
#progress {
    position: fixed;
    left: 0;
    top: 76px;
  
    height: 8px;
  }
  .progress-color {
    background-color: #1e2337;
  }