How to prevent an icon from being cut off?

I have created a timeline component in React and I am trying to include an icon on the timeline. However it is being cut off for some reason and is only showing half of the icon on either side. I know it is an overflow issue but I cannot pinpoint it. This is how it currently looks like:

When I add overflow: visible. It does show the full icon but then the timeline section encroaches on to the next section due its length.

This is what happens I add overflow: visible.

As you can see, it is encroaching on to Contact.

How can I show the icon fully but also not have the timeline section encroach on to other sections?

This is what I have so far.

TimelineItem.jsx

import {Person, Mail} from "@material-ui/icons"

    const TimelineItem = ({ data }) => (
        <div className="timeline-item">
            <div className="timeline-item-content">
                <span className="tag" style={{ background: data.category.color }}>
                    {data.category.tag}
                </span>
                <time>{data.date}</time>
                <p>{data.text}</p>
                {data.link && (
                    <a
                        href={data.link.url}
                        target="_blank"
                        rel="noopener noreferrer"
                    >
                        {data.link.text}
                    </a>
                )}
                <div className="itemContainer">
                <Mail classname="icon" />
                </div>
                {/* <span className="circle"/> */}
            </div>
        </div>
    );

    export default TimelineItem;

Timeline.jsx

import TimelineData from './TimelineData';
    import TimelineItem from './TimelineItem'
    import './timeline.scss'


    export default function Timeline() {
        return (
            <div className="reactTimeline">
                <h1>Satyen Singh Timeline</h1>
                <div className="timeline-container" id="timeline">
                    {TimelineData.map((data, idx) => (
                        <TimelineItem data={data} key={idx} />
                    ))}
                </div>
            </div>
        )
    }

timeline.scss

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
//   overflow-x: visible;
//   background-color: white;
}



h1 {
    text-align: center;
}

body {
    // overflow: visible;

//   line-height: 1.5;
}
.timeline-container {
    display: flex;
    flex-direction: column;
    position: relative;
    margin: 40px 0;
    // height: 200vh;
    overflow-x: visible;
    // position: relative;
  }
  .timeline-container::after {
    background-color: #e17b77;
    content: '';
    position: absolute;
    left: calc(50% - 2px);
    width: 4px;
    height: 100%;
    overflow-x: visible;
  }

  .timeline-item {
    display: flex;
    justify-content: flex-end;
    padding-right: 30px;
    position: relative;
    margin: 10px 0;
    width: 50%;
    // overflow-x: visible;
  }
  .timeline-item:nth-child(odd) {
    align-self: flex-end;
    justify-content: flex-start;
    padding-left: 30px;
    padding-right: 0;
    // overflow-x: visible;
  }

  .timeline-item-content {
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.3);
    border-radius: 5px;
    background-color: #fff;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    padding: 15px;
    position: relative;
    width: 400px;
    max-width: 70%;
    text-align: right;
    z-index: 2;
    overflow-x: visible;
  }
  .timeline-item-content::after {
    content: ' ';
    background-color: #fff;
    box-shadow: 1px -1px 1px rgba(0, 0, 0, 0.2);
    position: absolute;
    right: -7.5px;
    top: calc(50% - 7.5px);
    transform: rotate(45deg);
    width: 15px;
    height: 15px;
    // overflow-x: visible
  }
  .timeline-item:nth-child(odd) .timeline-item-content {
    text-align: left;
    align-items: flex-start;
    // overflow-x: visible
  }
  .timeline-item:nth-child(odd) .timeline-item-content::after {
    right: auto;
    left: -7.5px;
    box-shadow: -1px 1px 1px rgba(0, 0, 0, 0.2);
    overflow-x: visible
  }

  .timeline-item-content .tag {
    color: #fff;
    font-size: 12px;
    font-weight: bold;
    top: 5px;
    left: 5px;
    letter-spacing: 1px;
    padding: 5px;
    position: absolute;
    text-transform: uppercase;
    overflow-x: visible;
  }
  .timeline-item:nth-child(odd) .timeline-item-content .tag {
    left: auto;
    right: 5px;
    overflow: visible;
  }
  .timeline-item-content time {
    color: #777;
    font-size: 12px;
    font-weight: bold;
  }
  .timeline-item-content p {
    font-size: 16px;
    line-height: 24px;
    margin: 15px 0;
    max-width: 250px;
  }
  .timeline-item-content a {
    font-size: 14px;
    font-weight: bold;
  }
  .timeline-item-content a::after {
    content: ' ►';
    font-size: 12px;
    overflow: visible;
  }
  .timeline-item-content .itemContainer {
    position: absolute;
    top: calc(50% - 10px);
    right: -40px;
    width: 20px;
    height: 20px;
    z-index: 100;
    overflow-x: visible;
  }
  .timeline-item:nth-child(odd) .timeline-item-content .itemContainer {
    right: auto;
    left: -40px;
    overflow-x: visible;
  }