body {
    font-family: Arial, Helvetica, sans-serif;
    margin: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    height: 100vh;
}

.sidenav {
    width: 0;
    height: 100%;
    position: fixed; 
    top: 0;
    left: 0;
    z-index: 999;
    background-color: #333;
    overflow-x: hidden;
    transition: 0.6s all ease-in-out;
     display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.sidenav a {
    padding: 8px;
    text-decoration: none;
    font-size: 25px;
    color: #818181;
    display: block;
    transition: 0.3s all ease-in-out;
}

.sidenav a:hover {
    color: #f1f1f1;

}

.sidenav .times{
    position: absolute;
    top: 1%;
    right: 5%;
    font-size: 36px;
}