/* The side navigation menu */
.sidenav {
    height: 100%;
    width: 0;
    position: fixed;
    z-index: 9999;
    top: 0;
    left: 0;
    overflow-x: hidden;
    padding-top: 60px;
    transition: 0.5s;
    background: linear-gradient(-45deg, #87f8ae, #92e3a9, #92d400, #00aa00);
    background-size: 400% 400%;
    animation: gradient 15s ease infinite;
}
.sidenav ul {
    margin-left: 0;
    padding-left: 0;
    margin-top: 0;
    padding-top: 0;
}
.sidenav ul li{
    list-style-type: none;
}
.sidenav a {
    padding: 8px 8px 8px 32px;
    text-decoration: none;
    font-size: 16px;
    color: #fff;
    display: block;
    transition: 0.3s;
}
.sidenav a:hover {
    color: #fff;
    text-decoration: underline;
}
.sidenav a.active { text-decoration: underline;}
.sidenav .closebtn {
    position: absolute;
    top: 0;
    left:0;
    right: 0;
    margin: 20px auto 0 auto;
    font-size: 40px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    /*border:2px solid #fff;*/
    line-height: 35px;
    display: block;
    padding-top: 0;
}

#main {
    transition: margin-left .5s;
    padding: 20px;
}
@media screen and (max-height: 450px) {
    .sidenav {padding-top: 15px;}
    .sidenav a {font-size: 18px;}
}