在每行 CSS 中居中屏幕特定列-解网

问：

我是 Web 开发的新手，作为我的第一个项目，我正在设计我正在处理的项目的可视化，我希望看起来像这样：

我很难将星星放在每一行的中心。当前代码如下所示：

<!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>

这是网站现在不居中星的样子：

我尝试过的事情：

弹性盒
搜索其他 stackoverflow 答案（它们都是关于居中文本而不是元素的）
使用网格
将我能找到的任何属性设置为“center”

感谢您提供的任何建议！

HTML CSS 居中

答：

1赞 Brett Donald 8/28/2023 #1

我将使用三列网格来实现这种布局，左列包含粗线和标题，中间列包含星形，右列包含细线。

使其工作的另一个关键是网格不像表格那样具有嵌套单元格元素的行元素，它们只有子元素。网格（元素上的样式）需要其子元素是元素的子元素，而不是元素本身。在元素上使用来实现这一点。<ul><li><li>display: contents<li>

#projectNamesList {
  display: grid;
  grid-template-columns: auto 30px auto;
}

.projectItem {
  display: contents;
}

用于演示的工作片段：

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 = 'https://mario.wiki.gallery/images/b/bb/MPS_Favicon.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;

          const lineWithTitle = document.createElement('div');
          lineWithTitle.classList.add('lineWithTitle');

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

          projectNamesList.appendChild(listItem);
        });

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

    fetchData();

body {
  background-color: #124264;
  color: #000000;
  font-family: 'Amarante';
  margin: 0;
  height: 100vh;
  overflow: auto;
}

.starImages {
  width: 100%;
}

#projectNamesList {
  list-style: none;
  display: grid;
  grid-template-columns: auto 30px auto;
  align-items: center;
}

.projectItem {
  display: contents;
}

.lineWithTitle {
  text-align: right;
  position: relative;
}

.thickLine {
  height: 10px;
  background-color: #E0B624;
  margin: 0 0 0 auto;
}

.thickLine+span {
  position: absolute;
  right: 0;
  top: -5px;
}

.thinLine {
  height: 2px;
  background-color: #E0B624;
}

<link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Amarante&display=swap">

  <ul id="projectNamesList"></ul>

0赞 Noa Perlmutter 8/28/2023

非常感谢！这成功了，我现在知道将来如何考虑这种布局了。

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在每行 CSS 中居中屏幕特定列

center on the screen specific column in each row css

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