.choixf{
  display:flex;
  flex-wrap: wrap;
  background-color: white;
  box-shadow: 3px 3px 20px rgba(1, 255, 255, 0.9);
  margin:auto;
  margin-top:1%;    
  border-radius: 0px;
  height: 20%;
  text-decoration: none;
  width: 100%;
}

  
  nav_lateral a{
    display: inline-block;
    text-decoration: none; /*enlever le surlignage */
    padding-bottom: 10px;
    padding-top: 8px;
    font-family: 'AllerBold';   
    text-shadow: 0px 0px 1px rgba(255, 255, 255, 0.8);
  }
  .nav_lateral > ul{
    margin-left: 2px;
    font-size: 20px;
  }
        
  .descript_optionf{
    box-shadow: 0px 2px 3px #1c1a99;
    font-size: 18px;
    font-style: initial;
    font-weight: bold;
    text-shadow: 10px 10px 20px rgba(255, 255, 255, 0.8);
    text-align: center;
    float: center;
    padding-left: 15px;
    padding-right: 15px;
    margin-left: 3px;
    margin-right: 1px;
    margin-bottom:15px;  
  }

.submenu{
  display: none;
  width: 100%;

}
nav_lateral li:hover .submenu{
  display: initial;
  position: relative;
  top: 1000%
  left: 0px;
  padding: 0px;
  z-index: 100000;
}
.submenu li{
  border-bottom: 1px solid #CCC;
}
.submenu li a{
  padding: 15px 30px;
  font-size: 18px;
  font-style: italic;
  color: #222538;
}
.submenu li:hover a{
  border-top: 3px solid #e44d26;
  background-color: rgba(228, 77, 38, 0.15);
  padding-left: 20px;
}