form_multi_step.html

<div class="multi-step-form">
    <div class="step active">Step 1</div>
    <div class="step">Step 2</div>
    <div class="step">Step 3</div>
</div>

<form id="form">
    <div class="form-step active">
        <label>Name:</label>
        <input type="text">
        <button type="button" onclick="nextStep()">Next</button>
    </div>

    <div class="form-step">
        <label>Email:</label>
        <input type="email">
        <button type="button" onclick="prevStep()">Back</button>
        <button type="button" onclick="nextStep()">Next</button>
    </div>

    <div class="form-step">
        <label>Password:</label>
        <input type="password">
        <button type="button" onclick="prevStep()">Back</button>
        <button type="submit">Submit</button>
    </div>
</form>

<script>
    let stepIndex = 0;
    const steps = document.querySelectorAll(".form-step");
    const indicators = document.querySelectorAll(".step");

    function showStep(index) {
        steps.forEach((step, i) => {
            step.classList.toggle("active", i === index);
            indicators[i].classList.toggle("active", i === index);
        });
    }

    function nextStep() {
        if (stepIndex < steps.length - 1) stepIndex++;
        showStep(stepIndex);
    }

    function prevStep() {
        if (stepIndex > 0) stepIndex--;
        showStep(stepIndex);
    }
</script>

<style>
    .multi-step-form {
        display: flex;
        gap: 10px;
        margin-bottom: 10px;
    }

    .step {
        width: 60px;
        height: 30px;
        text-align: center;
        line-height: 30px;
        background: #ddd;
        border-radius: 5px;
        transition: 0.3s;
    }

    .step.active {
        background: #4caf50;
        color: white;
    }

    .form-step {
        display: none;
    }

    .form-step.active {
        display: block;
    }

    button {
        margin-top: 10px;
        padding: 8px 15px;
        background: #3498db;
        color: white;
        border: none;
        border-radius: 5px;
        cursor: pointer;
    }
</style>