テキストを省略記号で切り詰めて「123 T」を追加するにはどうすればよいですか。次の行で?

.container {
  max-width: 200px;
  margin: 5px;
}

.main-text {
  line-height: 1.2em;
  max-height: calc(2 * 1.2em);
  overflow: hidden;
  display: inline-block;
  position: relative;
}

.main-text:after {
  content: "123 T.";
  display: inline-block;
  width: 40px;
  position: relative;
  z-index: 999;
  box-shadow:
    40px 0 0 #fff,
    80px 0 0 #fff,
    120px 0 0 #fff,
    160px 0 0 #fff;
  color: #8e8f8f;
  font-size: 10px;
  background: #fff;
  margin-left: 2px;
}

.main-text span {
  position: absolute;
  top: 1.2em;
  right: 0;
  padding: 0 3px;
  background: #fff;
}

.main-text span:before {
  content: "...";
}

.main-text span:after {
  content: "123 T.";
  color: #8e8f8f;
  font-size: 10px;
}

<div class="container">
  <div class="main-text">
    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam metus
    mi, dapibus sit amet posuere eu, porttitor condimentum nulla.
    Donec convallis lorem justo, eget malesuada lorem tempor vitae.
    Aliquam sollicitudin lacus ipsum, at tincidunt ante condimentum
    vitae. <span></span>
  </div>
</div>

<div class="container">
  <div class="main-text">Lorem ipsum <span></span></div>
</div>

<div class="container">
  <div class="main-text">Lo <span></span></div>
</div>

<div class="container">
  <div class="main-text">
    Lorem ipsum dolor sit ameta, adipiscing elit. Nam metus <span></span>
  </div>
</div>

<div class="container">
  <div class="main-text">
    Lorem ipsum dolor sit ameta, adipiscing elit <span></span>
  </div>
</div>