header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 5%;
    background: #fff;
}
#btn-menu {
    background: var(--theme);
    color: #fff;
    padding: 10px 24px;
    border-radius: 3px;
    border: none;
    font-size: 16px;
}
header .menu {
    position: absolute;
    width: 200px;
    display: flex;
    flex-direction: column;
    right: 0;
    height: 100vh;
    background: #fff;
    transition: 1s;
    box-shadow: 0 0 3px;
    padding: 40px;
}
header .menu ul li {
    margin-top: 25px;
    margin-left: 10px;
}
header .menu h3 {
    color: #181818;
}
header .menu ul li a{
    color: #8d8d8d;
    font-weight: 100;
}
header .menu ul li a:hover {
    font-weight: 400;
    color: orange;
}
[menu-desactive] { 
    right: -100% !important;
    position: absolute;
    transition: 1s;
  
}
.header-menu-nav {
    position: fixed;
    right: 0;
    top: 89px;
    z-index: 9;
    transition: 1s;
    width: 200px;
}