body {
    font-family: "Quicksand", sans-serif;
    font-size: 1.25rem;
    font-optical-sizing: auto;
    line-height: 1.75rem;
    font-weight: 400;
    font-style: normal;
}

#menu__toggle {
    opacity: 0;
}

#menu__toggle:checked+.menu__btn>span {
    transform: rotate(45deg);
}

#menu__toggle:checked+.menu__btn>span::before {
    top: 0;
    transform: rotate(0deg);
}

#menu__toggle:checked+.menu__btn>span::after {
    top: 0;
    transform: rotate(90deg);
}

#menu__toggle:checked~.menu__box {
    left: 0 !important;
}

.menu__btn {
    position: fixed;
    top: 20px;
    left: 20px;
    width: 48px;
    height: 48px;
    cursor: pointer;
    z-index: 1;
}

.menu__btn>span,
.menu__btn>span::before,
.menu__btn>span::after {
    display: block;
    position: absolute;
    width: 100%;
    height: 2px;
    background-image: url('images/portada.jpg');
    transition-duration: .25s;
}

.menu__btn>span::before {
    content: '';
    top: -8px;
}

.menu__btn>span::after {
    content: '';
    top: 8px;
}

.menu__box {
    display: block;
    position: fixed;
    top: 0;
    left: -100%;
    width: 300px;
    height: 100%;
    margin: 0;
    padding: 80px 0;
    list-style: none;
    background-image: url('images/portada.jpg');
    opacity: 0.65;
    box-shadow: 2px 2px 6px rgba(0, 0, 0, .4);
    transition-duration: .25s;
}

.menu__item {
    display: flex;
    padding: 12px 24px;
    color: #ffffff;
    font-family: 'Roboto', sans-serif;
    font-size: 20px;
    font-weight: 600;
    text-decoration: none;
    transition-duration: .25s;
}

.menu__item:hover {
    background-color: #CFD8DC;
    color: #333;
}

.hamburger-menu {
    z-index: 1;
    position: absolute;
}