.burger-btn {
    width: 24px;
    height: 24px;
    position: relative;
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
}

.burger__line {
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 2px;
    background: #000;
}

.burger__line::before,
.burger__line::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    width: 100%;
    height: 2px;
    background: #000;
}

.burger__line::before {
    transform: translateY(-6px);
}

.burger__line::after {
    transform: translateY(6px);
}

/* Состояние крестика */
.burger-btn.active .burger__line {
    background: transparent;
}

.burger-btn.active .burger__line::before {
    top: 0;
    transform: rotate(45deg);
}

.burger-btn.active .burger__line::after {
    bottom: 0;
    transform: rotate(-45deg);
}