我如何制作我所有的列表段落，對齊相同

Question

我有兩個帶有有序列表的段落，但是在我的網站上，這些段落不在垂直方向的同一行上。 這是一個非常微小的差異，但我需要修復它。 我嘗試更改 CSS 中的邊距，但兩個段落同時移動。 第二段比第一段更靠右，我需要它與第一段對齊。

這是代碼

    <div id="content">
          <div class="content_item">
            
            <br />
<h1> Conference/Workshop Publications </h1>
<ol>

<br /><li>Deb, D., Jones, E., "University-wide Adoption of Data Science", 51th ACM SIGCSE Conference, February 2020.<a href="https://doi.org/10.1145/3328778.3372657">
Link</a></li>


<br /><li>Deb, D., Smith, R. M., and Fuad, M, "Infusing Data Science Across Disciplines", In Proceedings of the 2019 ACM Conference on Innovation and Technology in Computer Science Education (ITiCSE), July 2019.<a href="https://doi.org/10.1145/3304221.3325579">
Link</a></li>

<br /><li>Deb, D., Fuad, M., Irwin, K., "A Module-based Approach to Teaching Big data and Cloud Computing Topics at CS Undergraduate Level", In the Proceedings of the SIGCSE '19: the 50th ACM Technical Symposium on Computer Science Education, February, 2019.<a href="https://doi.org/10.1145/3287324.3287494">
Link</a></li>

<br /><li>Deb, D., Cousins, S., Fuad, M., "Teaching Big Data and Cloud Computing: A Modular Approach", In the Proceedings of the 32nd IEEE International Parallel and Distributed Processing Symposium Workshops (IPDPSW), May, 2018.<a href="https://ieeexplore.ieee.org/document/8425437">
Link</a></li>

<br /><li>Deb, D., "On the Integration of Big Data and Cloud Computing Topics”, 48th ACM SIGCSE, March 2017.<a href="https://doi.org/10.1145/3017680.3022436">
Link</a></li>
</ol>

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<div id="content">
          <div class="content_item">
            
<h1> Student Poster/Presentation </h1>
<ol>

<br /><li>Fields, M., Deb, D., “Use of Machine Learning Methods for Vehicle Predictive Maintenance”, Oral presentation at 2020 NSF/AAAS Emerging Researchers National Conference (ERN) in STEM, February 2020. <a href= "content/FieldsERN2020.pdf">Abstract</a>
</br>

<br /><li>Rodrigues-Romero, D., Deb, D., “Stock Price Prediction using Ensemble Learning”, Poster presentation at 2020 NSF/AAAS Emerging Researchers National Conference (ERN) in STEM, February 2020. <a href= "content/DavidERN2020.pdf">Abstract</a>
</br>

<br /><li>Rodrigues-Romero, D., Deb, D., “Using Sentiment of News Articles to Predict Stock Price Performance”, Poster presentation at 2019 NSF/AAAS Emerging Researchers National Conference (ERN) in STEM, February 2019. <a href= "content/DavidERN2019.pdf">Poster (pdf)</a> 
</br>

<br /><li>Robert, J., Deb, D., “Data Science for Understanding and Assessing Spatial Justice”, Poster presentation at 2019 NSF/AAAS Emerging Researchers National Conference (ERN) in STEM, February 2019.<a href= "content/RobertERN2019.pdf">Poster (pdf)</a> 
</br>

<br /><li>Cousins, S., Deb, D., “Large-scale Workload Characterization in Apache Spark Framework”, Oral presentation at 2018 NSF/AAAS Emerging Researchers National Conference (ERN) in STEM, February 2018. <strong>(Awarded First Prize in the Undergraduate Computer Science Research Category)</strong>.<a href= "content/CousinsERN2018.pdf">Abstract</a>
</br>

<br /><li>Mathis, G., Cousins S., Deb D., “Music Mood Classification based on Lyrics”, Poster presentation at 2018 NSF/AAAS Emerging Researchers National Conference (ERN) in STEM, February 2018.<a <a href="content/George-ERN2018poster.pdf">Poster (pdf)</a></li>


<br /><li>Cousins, S., Deb, D., “Explore Spark-SQL and its performance using TPC-H Workload”, Poster presented at NC-LSAMP Annual Undergraduate Research Conference, NC state university, November 2017. <strong>(Awarded second prize in Computer Science research category)</strong>.<a href="content/Sebastian-NSLamps2018poster.pdf">Poster (pdf)</a></li>


<br /><li>Harp. N, Deb, D., “Sentiment Analysis of Tweets and Movie Reviews”. Poster presented at WSSU Scholarship day, April. 2017.<a href="content/NoelleAbstract.pdf">Abstract</a>, <a href="content/NoellePoster.pdf">Poster (pdf)</a></li>


<br /><li>Cousins, S., Deb, D., “Using Apache Spark in the Analysis of Wikipedia Page View Data in Correlation to the Real World Events”, Poster presented at WSSU Scholarship day, April. 2017<a href="content/SebastianAbstract.pdf">Abstract</a>, <a 
href="content/SebastianPoster.pdf">Poster (pdf)</a></li>

</ol>



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這是 CSS

    #content
{ font: normal 100% Arial, Helvetica, sans-serif;
  width: 680px;
  margin: 0 0 20px 10px;
  float: left;
  }

.content_item
{ width: 680px;
  margin-top: .01px;
  margin-bottom: .01px;
margin-left: auto;
text-align: justify;
  text-justify: inter-word;
line-height: 1.5;
}

Answer 1

你有幾個問題：

1. 第一個內容 div 未關閉
2. 你有幾個</br>而不是</li> （不需要關閉br標簽）
3. 你最后缺少一個</div>

這是一個一切正常的jsfiddle： https://jsfiddle.net/2tbgf8qx/