/* скрываем чекбокс */
#menu__toggle {
    opacity: 0;
}
/* стилизуем кнопку */
.menu__btn {
    /*display: flex; */
    /*align-items: center;  */
    /*position: fixed;*/
    /*top: 20px;*/
    /*left: 340px;*/
    /*width: 26px;*/
    /*height: 26px;*/
    /*cursor: pointer;*/
    /*z-index: 2;*/
        position: fixed; top: 50px; right: 20px; z-index: 1000; width: 35px; height: 35px; cursor: pointer;
}
/* добавляем "гамбургер" */
.menu__btn > span,
.menu__btn > span::before,
.menu__btn > span::after {
    display: block;
    position: absolute;
    width: 100%;
    height: 3px;
    background-color: #000000;
}
.menu__btn > span::before {
    content: '';
    top: -8px;
}
.menu__btn > span::after {
    content: '';
    top: 8px;
}

/* контейнер меню */
.menu__box {
    display: block;
    position: fixed;
    visibility: hidden;
    top: -66px;
    left: -100%;
    width: 300px;
    height: 100%;
    margin: 0;
    padding: 80px 0;
    list-style: none;
    text-align: center;
    background-color: rgba(236, 239, 241, 0.94);
    box-shadow: 1px 0px 6px rgba(0, 0, 0, .2);
    z-index: 1;
}
/* элементы меню */
.menu__item {
    display: block;
    padding: 12px 24px;
    color: #333;
    font-family: 'Roboto', sans-serif;
    font-size: 20px;
    font-weight: 600;
    text-decoration: none;
}
.menu__item:hover {
    background-color: rgba(207, 216, 220, 0.94);
}
#menu__toggle:checked ~ .menu__btn > span {
    transform: rotate(45deg);
}
#menu__toggle:checked ~ .menu__btn > span::before {
    top: 0;
    transform: rotate(0);
}
#menu__toggle:checked ~ .menu__btn > span::after {
    top: 0;
    transform: rotate(90deg);
}
#menu__toggle:checked ~ .menu__box {
    visibility: visible;
    left: 0;
}
.menu__btn > span,
.menu__btn > span::before,
.menu__btn > span::after {
    transition-duration: .25s;
}
.menu__box {
    transition-duration: .25s;
}
.menu__item {
    transition-duration: .25s;
}