* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}


/* ************************************ */
/* ************************************ */
/* ************    MENU   ************* */
/* ************************************ */
/* ************************************ */
/* ************************************ */




/* reglage texte et couleurs du menu */
    .menu01 {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    font-size: 1rem;
    font-weight: normal;
    line-height: 1.4;
    color: GRAY;
    

}


    /* bandeau de navigation */
    nav {
    color: white;
    box-shadow: 	
	0 1px 1px 0 rgba(255, 255, 255, 0.15),
	0 1px 0px -3px rgba(255, 255, 255, 0.12), 
	0 1px 6px 0 rgba(255, 255, 255, 1.2)
  }


   /* mise en forme du child de la nav */
     .nav-wrapper {
      display: flex;
      flex-direction: row;
      flex: 1;
      flex-basis: auto;
      justify-content: space-between;
      align-items: center;
      max-width: 70rem;
      width: 100%;
      margin: 0 auto;
      padding: 0 2rem;  }
    
    

      /* le logo */
      .nav-brand {
        font-family: inherit;
        font-size: 1.7rem;
        font-weight: 700;
        line-height: inherit;
        text-transform: uppercase;
        color: white;      }


		/*bouton*/
		
    .content-button {
		
	height:100vh;
	display: flex;
	align-items: center;
	justify-content: center;
	text-align:center}

	.button_start_the_tour {

	padding:20px;
	border-radius:8px;
	background-color:rgb(19, 27, 29, 0.95)!important;
	border:1px white solid;
	color:#fff;
	letter-spacing:10px;
	box-shadow: 5px 5px 5px 5px rgba(0, 0, 0, .2);
	transition: all 0.3s ease-in;
    font-family:"Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    font-size: 1.7rem;
    font-weight: 700;
    line-height: inherit;
    text-transform: uppercase;
    color: white;  	
}

	.button_start_the_tour:hover {
	background-color:white !important;
	color:black;
	cursor:pointer; /* affiche la main au survol */
	transition: all 0.3s ease-in;
	box-shadow: none; /* enleve l'ombre au survol */
	border:1px black solid;		
}	
	/*fin du bouton*/
	
	/* début texte page ada*/
.all-center-flex-child img {
	width:150px;
	margin: auto;
    display: flex;
	margin-bottom:1%;
}


.all-center-flex-parent {
  height:100vh;
  display: flex;
  align-items: center;
  justify-content: center;
   
}
.all-center-flex-child {
	width:70%;
	background-color: rgb(19, 27, 29, 0.95)!important;
	border:1px white solid;
	color:#fff;
	font-family:"Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
	padding:20px;
	border-radius:8px;
}

.all-center-flex-child p:first-of-type {
	padding-bottom:20px;
}

/* fin texte page ada*/

/* start list */

.parent-list {
  padding-top:50px;
  display: flex;
  justify-content: center;
   
}

.parent-list p {
	text-align:center;
	line-height:40px;
}

.all-center-flex-child {
	width:70%;
	background:black;
	border:1px white solid;
	color:#fff;
	padding:20px;
	border-radius:8px;
   
}

ul {
  padding-left:20px;
  list-style: square;  
  line-height:48px;
}

ul a {color:white;text-decoration: grey underline dotted; transition: all 0.3s ease-in;}
ul a:visited {color:white;}
ul a:hover {letter-spacing:5px; color:grey; background-color:inherit; transition: all 0.3s ease-in;}

.all-center-flex-child a {color:white;text-decoration:none; transition: all 0.3s ease-in;}

/* end list */

/* start VIDEO YOUTUBE */

.taillevideoyoutube {
        margin: auto;
}

.parent-teaser {
    margin-top: 2%;
    height: auto;
}
.all-center-flex-parent, .parent-teaser {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}
.videoyoutube {
	position: relative;
	padding-bottom: 56.25%;
	padding-top: 30px;
	height: 0;
	overflow: hidden;
}

.videoyoutube iframe,  
.videoyoutube object,  
.videoyoutube embed {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
  border:none;
}

.all-center-flex-child {
	width:70%;
	background-color: rgb(19, 27, 29, 0.95)!important;
	border:1px white solid;
	padding:none;
	border-radius:8px;
}

/* END VIDEO YOUTUBE */

      /* mise en forme des liens */
      .nav-link {
        display: flex;
        flex-direction: row;
        flex: 1;
        flex-basis: auto;
        justify-content: center;
        align-items: center;}

        /* apparence des liens */
        .nav-link a {
          font-size: 1rem;
          font-weight: 500;
          color: white;
          padding: 1.3rem;
          text-decoration: none;}


      /* survol des liens */
          .nav-link a:hover {
            color: white;
            background: black;          }

      /* on fait disparaitre la case à cocher*/
      #nav-check {
        display: none;      }

 body {
 background-image:url(https://ada-lovelace.fr/img/ada_1920.jpg);
 background-repeat: no-repeat;
 }

/* ************************************ */
/* ************************************ */
/* RESPONSIVE MENU */
/* ************************************ */
/* ************************************ */

@media screen and (max-width: 1920px) { 
body {  
 /* start img responsive & adaptive on body BCK */

  /* Location of the image */
   background-image: url(https://ada-lovelace.fr/img/ada_1920.jpg);
  
  /* Image is centered vertically and horizontally at all times */
  background-position: center center;
  
  /* Image doesn't repeat */
  background-repeat: no-repeat;
  
  /* Makes the image fixed in the viewport so that it doesn't move when the content height is greater than the image height */
  background-attachment: fixed;
  
  /* This is what makes the background image rescale based on its container's size */
  background-size: cover;
  
  /* Pick a solid background color that will be displayed while the background image is loading */
  background-color:#464646;
  
  /* SHORTHAND CSS NOTATION : on peut écrire tout cela en une seule ligne :
   * background: url(background-photo.jpg) center center cover no-repeat fixed;
   */
}}

/* For mobile devices */

@media only screen and (max-width: 800px) {
body {
     background-image: url(https://ada-lovelace.fr/img/ada_800.jpg);
}

.all-center-flex-child{
	width:100% important!;
}
.parent-teaser {
    height: 100vh;
}

.parent-teaser .all-center-flex-child {
    width: 100%;
    border: none;
    border-radius: 0px;
}

/* END CSS img responsive & adaptive on body BCK */
	
      .nav-wrapper {
        padding: 1rem;      }


      .nav-button {
          display: inline-block;
          position: absolute;
          top: 0;
          right: 0;}

       .nav-menu label {
            display: inline-block;
            width: 3rem;
            height: 3rem;
            margin: 1.7rem 0;}

        .nav-menu span {
              display: block;
              width: 2rem;
              height: 0.5rem;
              border-top: 2px solid white;}

        .nav-link {
          z-index: 9999 !important;
          position: absolute;
          display: block;
          width: 100%;
          background-color: rgb(19, 27, 29, 0.95);
          transition: all 0.3s ease-in;
          top: 4.2rem;
          left: 0;
          z-index: -2;
          overflow: hidden;}

         .nav-link a {
            display: block;
            width: 100%;   }
			
		.nav-link a:hover{
			color:rgb(19, 27, 29);
			background:white;
			transition: all 0.3em ease-in;}

          /* si burger cliqué */
         
            
          #nav-check:not(:checked) + .nav-link {
            height: 0;}

          #nav-check:checked + .nav-link {
            height: calc(100vh - 4.2rem);
            overflow: hidden;}


 /* end */ 
 
 
}


/* ************************************ */
/* ************************************ */
/* **********   FIN MENU   ************ */
/* ************************************ */
/* ************************************ */
/* ************************************ */