Inputs with Icons

<!DOCTYPE html>
<title>My Example</title>

<div class="icon-form-container">
    <h2>Account Login</h2>
    <form action="#" method="post">
        <div class="input-group">
            <span class="input-icon">
                
                <svg viewBox="0 0 24 24" fill="currentColor"><path d="M12 12c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm0 2c-2.67 0-8 1.34-8 4v2h16v-2c0-2.66-5.33-4-8-4z"></path></svg>
            </span>
            <input class="form-control-icon" type="text" placeholder="Username" required>
        </div>
        
        <div class="input-group">
            <span class="input-icon">
                
                <svg viewBox="0 0 24 24" fill="currentColor"><path d="M18 8h-1V6c0-2.76-2.24-5-5-5S7 3.24 7 6v2H6c-1.1 0-2 .9-2 2v10c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V10c0-1.1-.9-2-2-2zm-6 9c-1.1 0-2-.9-2-2s.9-2 2-2 2 .9 2 2-.9 2-2 2zm3.1-9H8.9V6c0-1.71 1.39-3.1 3.1-3.1 1.71 0 3.1 1.39 3.1 3.1v2z"></path></svg>
            </span>
            <input class="form-control-icon" type="password" placeholder="Password" required>
        </div>
        
        <button class="submit-btn" type="submit">Sign In</button>
    </form>
</div>