function solve() {

    const inputElements = document.querySelectorAll('#container input');
    const addButton = document.querySelector('#container button');
    const petList = document.querySelector('#adoption ul');
    const adoptedList = document.querySelector('#adopted ul');

    const input = {
        name: inputElements[0],
        age: inputElements[1],
        kind: inputElements[2],
        owner: inputElements[3],
    }

    addButton.addEventListener('click', addPet)


    function addPet(e) {
        e.preventDefault();
        const name = input.name.value;
        const age = Number(input.age.value);

        const kind = input.kind.value;
        const owner = input.owner.value;

        if (!name || !age || age == '' || !kind || !owner) {
            return;
        }

        const liElement = document.createElement('li');
        const pElement = document.createElement('p');

        const strongNameElement = document.createElement('strong');
        strongNameElement.textContent = name;
        let innerNameText = document.createTextNode(' is a ');
        pElement.appendChild(strongNameElement);
        pElement.appendChild(innerNameText);

        const strongAgeElement = document.createElement('strong');
        let innerAgeText = document.createTextNode(' year old ');
        strongAgeElement.textContent = age;
        pElement.appendChild(strongAgeElement);
        pElement.appendChild(innerAgeText);

        const strongKindElement = document.createElement('strong');
        strongKindElement.textContent = kind;
        pElement.appendChild(strongKindElement);

        liElement.appendChild(pElement);

        const spanElement = document.createElement('span');
        spanElement.textContent = `Owner: ${owner}`;


        liElement.appendChild(spanElement);

        buttonContact = document.createElement('button');
        buttonContact.textContent = 'Contact with owner';
        liElement.appendChild(buttonContact);

        petList.appendChild(liElement);

        input.name.value = '';
        input.age.value = '';
        input.kind.value = '';
        input.owner.value = '';

        buttonContact.addEventListener('click', addContact);

        function addContact(e) {

            let currentLi = e.currentTarget.parentNode;
            currentLi.querySelector('button').remove();


            let divElement = document.createElement('div');
            let takeButton = document.createElement('button');
            takeButton.textContent = 'Yes! I take it!';
            let placeholderInputElement = document.createElement('input');
            placeholderInputElement.setAttribute = 'placeholder';
            placeholderInputElement.placeholder = 'Enter your names';
            divElement.appendChild(takeButton);
            divElement.appendChild(placeholderInputElement);
            currentLi.appendChild(divElement);

            takeButton.addEventListener('click', takePet);

            function takePet(e) {

                let currentPetLiElement = e.currentTarget.parentNode.parentNode;
                let ownerName = currentPetLiElement.querySelector('input');

                let checkOwner = ownerName.value;

                if (!checkOwner) {
                    return;
                }

                let print = currentPetLiElement.querySelector('div');

                currentPetLiElement.querySelector('div').remove();
                let newOwner = currentPetLiElement.querySelector('span');
                newOwner.textContent = `New Owner: ${checkOwner}`;
                let checkButton = document.createElement('button');
                checkButton.textContent = 'Checked';

                currentPetLiElement.appendChild(checkButton);

                adoptedList.appendChild(currentPetLiElement);

                checkButton.addEventListener('click', (e) => {

                    let print2 = e.currentTarget.parentNode.parentNode;
                    console.log(print2);

                    e.currentTarget.parentNode.parentNode.remove();

                });
            }
        }

    }
}