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對我來說，彈出窗口中的文本是一個有多行的跨度(& ltbr & gt).

我如何使彈出窗口的寬度足以適應最長的行，并在行數更多的情況下有垂直滾動條？默認情況下，它應該能夠支持20行。

目前它是這樣顯示的:

內容是:

BLD_V179_THROTTLE_LATEST_20230513_170843<br>Profile=IPSEC, Packet=IMIX, Mbps=884.6, KPPS=313.12, % Line Rate=4.67, % QFP=40.0<br>Profile=IPSEC, Packet=IMIX, Mbps=884.13, KPPS=313.12, % Line Rate=4.67, % QFP=40.0<br>Profile=IPSEC_QOS_DPI_FNF_SNAT_ZBFW, Packet=IMIX, Mbps=884.67, KPPS=313.12, % Line Rate=4.67, % QFP=40.0<br>

風格:

.modal-wrapper{
    background: rgba(0, 0, 0, 0.508);
    position: fixed;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    display: none;

}
.modal{
    font-family: Arial, Helvetica, sans-serif;
    text-align: center;
    max-width: 300px;
    width: 200%;
    background: wheat;
    padding: 20px;
    margin: 35vh auto;
    border-radius: 5px;
    position: relative;
}
.modal a{
    text-decoration: none;
    background: crimson;
    color: white;
    padding: 5px 10px;
    border-radius: 5px;
    margin: 10px;
}
.modal-close{
    color: red;
    border: 1px solid black;
    position: absolute;
    top: 5px;
    right: 5px;
    cursor:pointer;
    width: 20px;
    border-radius: 5px;
}

我的彈出菜單:

<div class="modal-wrapper">
     <div class="modal">
         <div class="modal-close">X</div>
         <div class="modal-content">
             <span>Results:</span>
             <br>
             <p style="font-size:70%;color:blue;" align="left" id="popup_content"></p>
         </div>
     </div>
 </div>

只需將彈出模式的寬度設置為最大內容。Max-content將在不換行的情況下使用所需的空間。設置最大寬度為100vw和框大小:邊界框，以阻止整個事情溢出。

對于高度，我使用CSS自定義屬性來計算要滾動的行數，并相應地設置max-height，然后設置overflow-y:auto。

下面標記的代碼:

.modal-wrapper {
  background: rgba(0, 0, 0, 0.508);
  position: fixed;
  inset:0;
  /*top: 0;
  left: 0;
  height: 100%;
  width: 100%;*/
  /*display: none;*/
}

.modal {
  font-family: Arial, Helvetica, sans-serif;
  text-align: center;
  box-sizing: border-box; /* added this */
  max-width: 100vw;  /* changed this from 300px */  
  width: max-content; /* changed this */
  background: wheat;
  padding: 20px;
  margin: 35vh auto;
  /*width: 200%;*/
  border-radius: 5px;
  position: relative;
}

.modal a {
  text-decoration: none;
  background: crimson;
  color: white;
  padding: 5px 10px;
  border-radius: 5px;
  margin: 10px;
}

.modal-close {
  color: red;
  border: 1px solid black;
  position: absolute;
  top: 5px;
  right: 5px;
  cursor: pointer;
  width: 20px;
  border-radius: 5px;
}

.modal-content p {
  --max-lines: 5;
  --font-size: 0.7rem;
  --line-height: 1.2;
  max-height: calc(var(--max-lines) * var(--font-size) * var(--line-height));
  overflow-y:auto;
  font-size: var(--font-size);
  line-height: var(--line-height);
  color: blue;
  text-align: left;
}

<div class="modal-wrapper">
  <div class="modal">
    <div class="modal-close">X</div>
    <div class="modal-content">
      <span>Results:</span>
      <br>
      <p id="popup_content">
    BLD_V179_THROTTLE_LATEST_20230513_170843<br>Profile=IPSEC, Packet=IMIX, Mbps=884.6, KPPS=313.12, % Line Rate=4.67, % QFP=40.0<br>Profile=IPSEC, Packet=IMIX, Mbps=884.13, KPPS=313.12, % Line Rate=4.67, % QFP=40.0<br>Profile=IPSEC_QOS_DPI_FNF_SNAT_ZBFW,
        Packet=IMIX, Mbps=884.67, KPPS=313.12, % Line Rate=4.67, % QFP=40.0<br>xx</br>
    xx</br>xx</br>xx</br>xx</br>
      </p>
    </div>
  </div>
</div>