* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

html {
    font-size: 10px;
}

a {
    text-decoration: none;
}

ul {
    list-style: none;
}

header {
    width: 100%;
    position: absolute;
    top: 0;
    left: 0;
}

.container {
    width: 100%;
    margin: 0 auto;
}

.menu-icons {
    display: none;
    align-items: center;
    justify-content: center;
    color: #eee;
    font-size: 2rem;
    position: absolute;
    top: 50%;
    right: 2rem;
    transform: translateY(-50%);
    cursor: pointer;
    z-index: 1500;
}

nav {
    width: 100%;
    display: flex;
    align-items: center;
    height: 60px;
    justify-content: space-around;
    gap: 2rem;
}

.logo {
    display: inline;
    font-size: 3rem;
    color: #eee;
    margin-right: 5rem;
    font-family: 'Kanit', sans-serif;
}

.nav-list {
    display: flex;
    align-items: center;
}

.nav-list li {
    line-height: 8rem;
    position: relative;
}

.sub-menu li {
    line-height: 4rem;
}

.nav-list a {
    display: block;
    color: #eee;
    padding: 0 1.7rem;
    font-size: 1.7rem;
    text-transform: uppercase;
    transition: color 650ms;
    position: relative;
}

.btn {
    padding: 1.3rem;
    display: inline-block;
    border: 2px solid #619E00;
    border-radius: 0.5rem;
    transition: background-color 650ms;
}

.btn:hover {
    color: #619E00;
}

.sub-menu {
    width: 34rem;
    display: block;
    position: absolute;
    border-top: 3px solid #619E00;
    background-color: #191919;
    z-index: 100;
    top: 16rem;
    transition: all 250ms ease;
    opacity: 0;
    visibility: hidden;
}

.sub-menu::before {
    content: '';
    position: absolute;
    top: -2.5rem;
    left: 3rem;
    border: 1.2rem solid transparent;
    border-bottom: 1.2rem solid #619E00;
}

.sub-menu .sub-menu::before {
    top: .9rem;
    left: -2.5rem;
    border: 1.2rem solid transparent;
    border-right-color: #619E00;
}

.sub-menu .sub-menu {
    border-top: none;
    border-left: 3px solid #619E00;
    top: 0;
    left: 160%;
}

.nav-list li:hover > .sub-menu {
    top: 8rem;
    opacity: 1;
    visibility: visible;
}

.sub-menu li:hover > .sub-menu {
    top: 0;
    left: 100%;
}

li.move-right {
    margin: auto 0 auto auto;
    line-height: initial;
}

@media screen and (max-width: 900px) {
    .nav-list {
        position: fixed;
        top: 60px;
        left: 0;
        height: 100vh;
        flex-direction: column;
        background-color: #191919;
        z-index: 1000;
        align-items: initial;
        display: none;
        overflow-y: scroll;
        width: 100%;
    }

    .nav-list > li {
        line-height: 6rem;
    }

    .sub-menu {
        position: initial;
        border: 3px solid transparent;
        margin-left: 1rem;
        max-height: 0;
        background: rgba(0, 0, 0, 0.5);
        overflow: hidden;
        margin-right: 0.4rem;
        padding-right: 1rem;
    }

    .sub-menu .sub-menu {
        border: none;
        overflow: hidden;
        margin-right: 0.4rem;
    }

    .sub-menu::before {
        display: none;
    }

    .nav-list li:hover > .sub-menu {
        opacity: 1;
        visibility: visible;
        max-height: initial;
    }

    li.move-right {
        margin: 0 auto 0 0;
        line-height: initial;
    }

    .menu-icons {
        display: block;
    }

    .fa-times {
        display: none;
    }

    nav.active .fa-times {
        display: block;
    }

    nav.active .fa-bars {
        display: none;
    }

    nav.active .nav-list {
        display: flex;
    }
}