feat: added step-by-step

assets/js/step-by-step.js

@@ -0,0 +1,16 @@
+const stepByStepButtons = document.querySelectorAll('.step-by-step__controls-button');
+const stepByStepCards = document.querySelectorAll('.step-by-step__card');
+const stepByStepContent = document.querySelector('.step-by-step__content');
+
+stepByStepButtons.forEach((button) => {
+  button.addEventListener('click', (event) => {
+    const targetId = event.currentTarget.dataset.target;
+    const targetCard = document.getElementById(targetId);
+    if (targetCard) {
+      stepByStepButtons.forEach((buttonElem) => buttonElem.classList.remove('active'));
+      stepByStepCards.forEach((card) => card.classList.remove('active'));
+      event.currentTarget.classList.add('active');
+      targetCard.classList.add('active');
+    }
+  });
+});