.tln-active, .tln-wrapper, .tln-line {
  width: 0;
  margin: 0;
  border: 0;
  padding: 0;
  outline: 0;
  box-sizing: border-box;
  vertical-align: middle;
  list-style: none;
}
.tln-active {
    display: inline-block;
    padding: 0.625em;
    width: calc(100% - 3em);    
    height: 75vh;
    font-size: 1em;
    line-height: 1.5;
    font-family: "Roboto Mono", monospace;
    word-break: break-all;
    border: 1px solid #aeaeae;
    background-color: #fff;
    resize: none;
    overflow-wrap: normal;
    overflow-x: auto;
    white-space: pre;
}
.tln-wrapper {
    width: fit-content;  
    padding: 0.6875em 0.3125em 2.1875em;
    height: 75vh;
    word-break: break-all;
    overflow: hidden;
    display: inline-block;
    counter-reset: line;
}
.tln-line {
    width: 100%;
    display: block;
    text-align: right;
    line-height: 1.5;
    font-size: 1em;
    color: #494949;
    background: #f7f7f7;
}
.tln-line::before {
  counter-increment: line;
  content: counter(line);
  font-size: 1em;
  user-select: none;
}


#wrapper {
    position: relative;
    height: 75vh;
    width: 100%;
    margin: 15px auto;
    resize: none;
}

    #wrapper::before {
        text-transform: uppercase;
        left: 0px;
        position: absolute;
        top: -18px;
        font-size: 16px;
    }