.bar,
.menu-bg,
.nav {
    transition: 0.3s
}

#menu {
    z-index: 2
}

#menu-bar {
    width: 45px;
    height: 40px;
    margin: 15px 0 20px 8px;
    cursor: pointer
}

.bar {
    height: 5px;
    width: 100%;
    background-color: #000;
    display: block;
    /* border-radius: 5px */
}

#bar1 {
    transform: translateY(-4px)
}

#bar3 {
    transform: translateY(4px)
}

.nav {
    display: none
}

.nav ul {
    padding: 0 8px
}

.nav li {
    list-style: none;
    padding: 11px 0
}

.nav li a {
    color: #000;
    font-size: 20px;
    text-decoration: none
}

.dark-mode .nav li a {
    color: #f9f7f1
}

.nav li a:hover {
    font-weight: 700
}

#menu,
.menu-bg {
    top: 0;
    left: 0;
    position: absolute
}

.dark-mode .bar {
    background-color: #f9f7f1
}

.menu-bg {
    z-index: 1;
    width: 0;
    height: 0;
    margin: 30px 0 20px 20px;
    background: radial-gradient(circle, #dc052d, #dc052d);
    border-radius: 50%
}

.change {
    display: block
}

.change .bar {
    background-color: #0f0f0f
}

.dark-mode .bar {
    background-color: #f9f7f1
}

.change #bar1 {
    transform: translateY(4px) rotateZ(-45deg)
}

.change #bar2 {
    opacity: 0
}

.change #bar3 {
    transform: translateY(-6px) rotateZ(45deg)
}

.change-bg {
    width: 520px;
    height: 460px;
    transform: translate(-60%, -30%)
}