Как переключать таблички по клику на кнопку в ZeroBlock в Tilda

<style>
        div[class*="tabtn_"] {
            cursor: pointer;
            transition: all 0.2s linear;
        }

        .tabEff {
            transform: scale(1.2)
        }

        div[class*="tabtn_"]:not(.tabEff):hover {
            transform: scale(0.8)
        }

        .tabcont-hide {
            opacity: 0 !important;
            pointer-events: none !important;
        }
    </style>
    <script>
        document.addEventListener("DOMContentLoaded", function () {
            let tabContents = document.querySelectorAll('div[class*="tabcont_"]');
            let tabButtons = document.querySelectorAll('div[class*="tabtn_"]');
        
            function selectContent(index) {
                for (let button of tabButtons) {
                    
                    for (let className of button.classList) {
                        if (!className.includes("tabtn")) {
                            continue
                        }
                        if (className === "tabtn_" + index) {
                            button.classList.add("tabEff")
                        }
                        else {
                            button.classList.remove("tabEff")
                        }
                    }
                }
        
                for (let content of tabContents) {
                    for (let className of content.classList) {
                        if (!className.includes("tabcont")) {
                            continue
                        }
                        if (className === "tabcont_" + index) {
                            content.classList.remove("tabcont-hide")
                        }
                        else {
                            content.classList.add("tabcont-hide")
                        }
                    }
                }
            }
        
            for (let eventBtn of tabButtons) {
                eventBtn.addEventListener("click", function() {
                    for (let className of eventBtn.classList) {
                        if (!className.includes("tabtn_")) {
                            continue
                        }
                        index = className.replace(/[^0-9]/g, "");
                        selectContent(index)
                    }
                })
            }
        
            selectContent(1)
        });
    </script>