.mobile-nav {
    width: 100%;
}

.hamburger {
    width: 100%;
    padding: 15px;
    font-size: 20px;
    cursor: pointer;
}

.menu {
    width: 100%;
    display: none;
    list-style: none;
    margin: 0;
    padding: 0;
}

.menu.active {
    display: block;
}

.accordion {
    width: 100%;
    padding: 15px;
    border: none;
    background: #f4f4f4;
    cursor: pointer;
    font-size: 16px;
}

.accordion::after {
    content: "+";
    float: right;
}

.accordion.open::after {
    content: "-";
}

.panel {
    display: none;
    list-style: none;
    padding-left: 15px;
    margin: 0;
}

.panel.open {
    display: block;
}

.panel li a {
    display: block;
    padding: 10px;
    text-decoration: none;
}

.sub {
    background: #fafafa;
    font-size: 15px;
}