.menu {
    background-color: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    padding: 0;
}

.line {
    fill: none;
    stroke: white;
    stroke-width: 6;
    transition: stroke-dasharray 600ms cubic-bezier(0.4, 0, 0.2, 1),
    stroke-dashoffset 600ms cubic-bezier(0.4, 0, 0.2, 1);
}

.line1 {
    stroke-dasharray: 60 207;
    stroke-width: 6;
}

.line2 {
    stroke-dasharray: 60 60;
    stroke-width: 6;
}

.line3 {
    stroke-dasharray: 60 207;
    stroke-width: 6;
}

.opened .line1 {
    stroke-dasharray: 90 207;
    stroke-dashoffset: -134;
    stroke-width: 6;
}

.opened .line2 {
    stroke-dasharray: 1 60;
    stroke-dashoffset: -30;
    stroke-width: 6;
}

.opened .line3 {
    stroke-dasharray: 90 207;
    stroke-dashoffset: -134;
    stroke-width: 6;
}