*{
 margin: 0;
 padding:0;
 box-sizing: border-box;
 list-style: none;
 text-decoration: none;
}

body{
   background-image: url(https://i.pinimg.com/originals/58/9d/6a/589d6a392eba190472dc3f57db519175.jpg);
  color:#FFF;
  font-family:Arial;
}
.wrapper{
  display: flex;
  position: relative;
}
.wrapper .sidebar{
  background-color: #8B0000;
  position: fixed;
  width:300px;
  height:100%;  
  padding: 30px 0;
  box-shadow: 0px 2px 40px 0px black;
}
.wrapper .sidebar h1{
  color: #FFF;
  text-transform: uppercase;
  text-align: center; 
  margin-bottom: 90px;
  font-size:2.25em;
  font-family:Arial
}

.wrapper .sidebar ul li{
  padding:15px;
  border-bottom: 2px solid rgba
}
.wrapper .sidebar ul li a{
  color: #FFF;
  display: block;
  font-size:1.35em;
  font-family:Arial
}
.wrapper .sidebar p{
  text-align:center; 
}
.wrapper .sidebar ul li:hover{
  background:#DC143C;
  opacity: 90%;
}
.wrapper .main_content{  
  background-image: url(https://i.pinimg.com/originals/58/9d/6a/589d6a392eba190472dc3f57db519175.jpg);
  background-size :cover;
  width :100%;
  margin-left: 0px;
  text-align: center;
}


.wrapper .main_content .intro{ 
  width:120%;
  padding:30px;
  margin-left: 300px;
  font-size:4em;
 
}
.wrapper .main_content .cahier{
  width:100%;
  padding:80px;
  
  font-size:4em;
  background-size :cover;
  box-shadow: 0px 2px 40px 0px black;
}
.wrapper .main_content .info{
  text-align:center;
  margin-left:650px;
  font-size:2em;
  margin-right:350px;
  background:#8B0000 ;
  line-height: 2;
  padding:55px;
  box-shadow: 0px 2px 10px 0px black;
  
}

.wrapper .main_content .titre{
  text-transform: uppercase;
  margin-left:650px;
  font-size:3em;
  margin-right:350px;
  
  font-family:Arial;
  margin-top:-35px;
  box-shadow: 0px 20px 40px 0px black;
}  
.tableau {
   color:white;
    border-collapse: collapse;
    min-width:400px;
    width:auto;
    cursor: pointer;
    margin: 100px auto;
    border: 2px solid #8B0000;
 }



th{
  font-size: 1.5em;
  color: White;
  border: 2px solid ; 
  
}
td{
  background:white;
  font-size: 1em;
  color: #8B0000;
  border: 2px solid ;
  padding: 20px; 
  line-height: 3;  
  
}



.tab_fonction{
  margin:40px;
  background:#8B0000;
  font-size: 1.5em;
  margin-left:400px;
  padding:15px
  margin-right:300px;
}
 
h2{
  margin-bottom:10px;
}

.nsi{
  padding:30px;
  background:#00008B;
  margin-left:150px;
  width:400%;
}