<script>
const niasmenubox = document.querySelector('.niasmenubox');
const niasmenuicon = document.querySelector('.niasmenuicon');
const niasclosemenu = document.querySelector('.niasclosemenu');
    
niasmenuicon.onclick = () =>{
        niasmenubox.classList.add('active');
    }; 
    
    niasclosemenu.onclick = () =>{
        niasmenubox.classList.remove('active');
    };
    
</script>