/* nav menu */
.header ul {
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: var(--main__clr);
}

.header ul a {
    display: block;
    outline: 1px solid var(--accent__clr);
    padding: 10px;
}

.header ul a:hover {
    background-color: var(--second__clr);
}

.header .menu {
    clear: both;
    max-height: 0;
    transition: max-height 0.2s ease-out;
}

.header .menu__icon {
    padding: 50px 0px;
    position: relative;
    float: right;
    cursor: pointer;
}

/* creating the menu icon inside the label tag */
.header .menu__icon .nav__icon {
    background: #000;
    display: block;
    height: 3px;
    width: 20px;
    position: relative;
    transition: background 0.2s ease-out;
}

/* Adds additional lines to menu icon */
.header .menu__icon .nav__icon:before {
    background: #000;
    content: "";
    display: block;
    height: 100%;
    width: 100%;
    position: absolute;
    transition: all 0.2s ease-out;
    top: 5px;
}

.header .menu__icon .nav__icon:after {
    background: #000;
    content: "";
    display: block;
    height: 100%;
    width: 100%;
    position: absolute;
    transition: all 0.2s ease-out;
    top: -5px;
}

.header .menu__btn {
    display: none;
}

/* general sibling combinator (~) selects the next sibling with class of .menu */
.header .menu__btn:checked ~ .menu {
    max-height: 240px;
}

/* menu icon animation */
.header .menu__btn:checked ~ .menu__icon .nav__icon {
    background: transparent;
}

.header .menu__btn:checked ~ .menu__icon .nav__icon:before {
    top: 0;
    transform: rotate(-45deg);
}

.header .menu__btn:checked ~ .menu__icon .nav__icon:after {
    top: 0;
    transform: rotate(45deg);
}