.sidenav {
  height: 100%;
  width: 0;
  position: fixed;
  z-index: 1;
  top: 0;
  right: 0;
  background-color: #424558 /*#111*/;
  overflow-x: hidden;
  transition: 0.5s;
  padding-top: 60px;
}

.sidenav a {
  padding: 8px 8px 8px 32px;
  text-decoration: none;
  font-size: 20px;
  color: white;
  display: block;
  transition: 0.3s;
}

.sidenav a:hover {
  color: #f1f1f1;
}

.sidenav .closebtn {
  position: absolute;
  top: 0;
  right: 25px;
  font-size: 36px;
  margin-left: 50px;
}

@media screen and (max-height: 450px) {
  .sidenav {padding-top: 15px;}
  .sidenav a {font-size: 18px;}
}

.menu_bouton_mobile{
    background-color: Transparent;
    background-repeat:no-repeat;
    border: none;
    cursor: pointer;
    overflow: hidden;
    float: left;
    width: 16.6%;
    text-align: center;
    padding: 7px 0;
    transition: all 0.3s ease;
    color: white;
    font-size: 20px;
    text-decoration: none;
}