下面是一个示例的HTML、CSS和JavaScript代码，用于创建一个简单的响应式标题栏。

HTML代码：

CSS代码（styles.css）：

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: #333;
  padding: 10px;
}

.logo a {
  color: white;
  text-decoration: none;
  font-size: 20px;
}

.nav-links {
  display: flex;
  justify-content: space-between;
  list-style: none;
}

.nav-links li a {
  color: white;
  text-decoration: none;
  margin: 0 10px;
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.line {
  width: 25px;
  height: 3px;
  background-color: white;
  margin: 2px;
}

@media(max-width: 768px) {
  .nav-links {
    position: absolute;
    right: 0px;
    height: 92vh;
    top: 8vh;
    background-color: #333;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 50%;
    transform: translateX(100%);
    transition: transform 0.5s ease-in;
  }

  .nav-links li {
    opacity: 0;
  }

  .hamburger {
    display: flex;
  }
}

.nav-active {
  transform: translateX(0%);
}

@keyframes navLinkFade {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0px);
  }
}

JavaScript代码（script.js）：

const navSlide = () => {
  const hamburger = document.querySelector('.hamburger');
  const navLinks = document.querySelector('.nav-links');
  const links = document.querySelectorAll('.nav-links li');

  hamburger.addEventListener('click', () => {
    navLinks.classList.toggle('nav-active');

    links.forEach((link, index) => {
      if (link.style.animation) {
        link.style.animation = '';
      } else {
        link.style.animation = `navLinkFade 0.5s ease forwards ${index / 7 + 0.3}s`;
      }
    });

    hamburger.classList.toggle('toggle');
  });
}

navSlide();

这段代码实现了一个简单的响应式标题栏。当屏幕宽度小于768px时，标题栏会隐藏菜单项，并显示一个汉堡菜单图标。单击汉堡菜单图标时，菜单项将会展开或折叠。