Vue implements tab navigation bar and supports left and right sliding function

<section class="theme-list">
  <div class="fixed-nav" ref="fixednav">
    <div class="fixed-nav-content">
      <p
        v-for="(item, index) in theme"
        :key="index"
        :class="['tab-title', activeId === index && 'select-tab']"
        @click="changeTab(index, $event)"
      >
        {{ item }}
      </p>
    </div>
  </div>
</section>

theme: ['CSDN Blog', 'Blog Garden', 'Good luck on the college entrance examination', 'Good luck on the high school entrance examination', 'Little Joy', 'Seventieth Anniversary'],
activeId: 0

.theme-list {
  margin-top: 12px;
}
.fixed-nav {
  overflow-x: scroll;
  -webkit-overflow-scrolling: touch;
}
.fixed-nav-content {
  display: flex;
}
.tab-title {
  padding: 0 13px;
  margin-right: 12px;
  color: #141414;
  border-radius: 13px;
  font-size: 12px;
  flex-shrink: 0;
  height: 0.52rem;
  line-height: 0.52rem;
}

changeTab(id, event) {
  // If the selected one is different from the currently active one if (id !== this.activeId) {
    this.activeId = id;
    // Calculate the position of the current button to see if it needs to be moved const spanLeft = event.clientX; // The left distance of the currently clicked element const divBox = document.querySelector(".select-tab").clientWidth / 2; // Half the width of the clicked element const totalWidths = document.body.clientWidth; // Total screen width const widths = totalWidths / 2; // Half the screen width const spanRight = totalWidths - spanLeft; // The right distance of the element const scrollBox = document.querySelector(".fixed-nav"); // Get the outermost element const scrollL = scrollBox.scrollLeft; // The distance the scroll bar scrolls // Slide when the left or right distance of the element is less than 100 if (spanRight < 100 || spanLeft < 100) {
      scrollBox.scrollLeft = scrollL + (spanLeft - widths) + divBox;
    }
  }
}

/*Define the scroll bar height and width and the background height and width corresponding to the size of the horizontal and vertical scroll bars respectively*/
::-webkit-scrollbar {
  width: 0.01rem;
  opacity: 0;
  display: none;
}
/*Define the inner shadow + rounded corners of the scroll bar track*/
::-webkit-scrollbar-track {
  background-color: #fff;
  opacity: 0;
}
/*Define the inner shadow + rounded corners of the slider*/
::-webkit-scrollbar-thumb {
  width: 0.01rem;
  border-radius: 0.01rem;
  opacity: 0;
}