如何用CSS实现每行特定列（星星元素）在屏幕居中？

我是网页开发新手，首个项目是制作正在进行的项目可视化页面，期望效果为每行的星星元素位于屏幕水平中心位置。目前网页中星星未实现居中效果，当前代码如下：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Amarante&display=swap">
  <style>
    body {
      background-color: #124264;
      color: #000000;
      font-family: 'Amarante';
      margin: 0;
      /*display: flex;
      align-items: center;
      justify-content: flex-end; /* Adjusted alignment to right */
      height: 100vh;
      overflow: auto;
    }


    /* Style for the first image */
    .starImages {
      width: 90px; /* Set the desired width */
      height: auto; /* Maintain aspect ratio */
      vertical-align: middle; /* Align the star icon with text */
    }

    /* Remove bullet points from the list */
    #projectNamesList {
      list-style: none;
      display: grid; /* Use grid display */
      grid-template-columns: 1fr; /* One column for each item */
      /*align-items: flex-end; /* Align items to the right */
      padding: 0; /* Remove default padding */
      overflow-x: auto; /* Allow horizontal scrolling */
      /*justify-items: flex-end; /* Align items to the right */
      justify-items: center;
    }

  
    /* Style for individual list items */
    .projectItem {
      display: flex;
      align-items: center;
      white-space: nowrap; /* Prevent line breaks within items */
      position: relative; /* Position relative for adding line */
    }

    /* Add a gold line */
    .thinLine {
      position: relative;
      height: 2px;
      background-color: #E0B624;
      margin-left: 0px;

    }

    .thickLine {
      position: relative;
      height: 10px;
      background-color: #E0B624;
      z-index: -1
    }
  </style>
</head>
<body>
  <ul id="projectNamesList"></ul>

  <script>
    async function fetchData() {
      try {
        const response = await fetch('https://us-central1-project-organization-noa.cloudfunctions.net/getData'); // Cloud Function URL
        console.log(response);
        const data = await response.json();
        console.log(data);

        const projectNamesList = document.getElementById('projectNamesList');
        dataWithoutHeader = data.slice(1);
        dataWithoutHeader.forEach(row => {
          const listItem = document.createElement('li');
          listItem.classList.add('projectItem'); // Add the class for styling

          // Create a span for the project name
          const projectNameSpan = document.createElement('span');
          projectNameSpan.textContent = row[0];

          // Create an image element for the star icon
          const starIcon = document.createElement('img');
          starIcon.src = 'star.svg';
          starIcon.alt = 'Star';
          starIcon.classList.add('starImages');

          // Create the gold line element
          const thickLine = document.createElement('div');
          thickLine.classList.add('thickLine');
          daysSince = row[2];
          numericThickWidth = 7 * Math.sqrt(daysSince)
          thickWidth = numericThickWidth + 'px';
          thickLine.style.width = thickWidth;
          percent = row[5] / 100;
          thinWidth = numericThickWidth * ((1 / percent) - 1) + 'px';

          //thinWidth = parseInt();
          const thinLine = document.createElement('div');
          thinLine.classList.add('thinLine');
          thinLine.style.width = thinWidth;

          projectNameSpan.style.marginRight = - numericThickWidth + 'px';

          // Append the elements to the list item
          listItem.appendChild(projectNameSpan);
          listItem.appendChild(thickLine);
          listItem.appendChild(starIcon);
          listItem.appendChild(thinLine);

          projectNamesList.appendChild(listItem);
        });

        // Center scroll
        const halfWidth = projectNamesList.scrollWidth / 2;
        const halfViewport = window.innerWidth / 2;
        projectNamesList.scrollLeft = halfWidth - halfViewport;

      } catch (error) {
        console.error('Error fetching data:', error);
      }
    }

    fetchData();
  </script>
</body>
</html>

我已尝试的方法：

• Flex布局
• 查找Stack Overflow相关文本居中方案
• 使用Grid布局
• 设置各类居中属性

恳请提供解决思路！

内容的提问来源于stack exchange，提问作者Noa Perlmutter