float：右侧CSS属性更改div内按钮的垂直中心位置

Question

以下代码中的<button>元素在使用CSS float:right属性右对齐时垂直居中。

HTML

---

<div class="opponents_list"><b class="opponent_list_bold_name">bob</b>
    <button class="opponent_list_button" type="button">Invite</button>
</div>
<div class="opponents_list"><b class="opponent_list_bold_name">harri</b>
    <button class="opponent_list_button" type="button">Invite</button>
</div>
<div class="opponents_list"><b class="opponent_list_bold_name">harri2</b>
    <button class="opponent_list_button" type="button">Invite</button>
</div>
<div class="opponents_list"><b class="opponent_list_bold_name">kaleeem</b>
    <button class="opponent_list_button" type="button">Invite</button>
</div>
<div class="opponents_list"><b class="opponent_list_bold_name">nehaaa</b>
    <button class="opponent_list_button" type="button">Invite</button>
</div>
<div class="opponents_list"><b class="opponent_list_bold_name">nitiisha</b>
    <button class="opponent_list_button" type="button">Invite</button>
</div>
<div class="opponents_list"><b class="opponent_list_bold_name">rangi</b>
    <button class="opponent_list_button" type="button">Invite</button>
</div>
<div class="opponents_list"><b class="opponent_list_bold_name">tom</b>
    <button class="opponent_list_button" type="button">Invite</button>
</div>

CSS

---

.opponents_list {
    width: 100vw;
    height: 3em;
    margin: 0.1em auto;
    background: #333;
}
.opponent_list_bold_name {
    line-height: 3em;
}
.opponent_list_button {
    float: right;
}

小提琴是here。
如何使按钮右对齐和垂直居中？

Answer 1

对我来说，最好的解决方案是使用display: table技术（正如我在上一个问题中的回答）：

＆＃13;

＆＃13;

#playerlist {
  display: table;
  width: 100%;
}
.opponents_list {
  height: 3em;
  margin: 0.1em auto;
  background: #666;
  vertical-align: middle;
  display: table-row;
}
.opponent_list_bold_name {
  vertical-align: middle;
  display: table-cell;
  width: 100%;
}
.tableCell {
  display: table-cell;
  vertical-align: middle;
}

＆＃13;

<div class="opponents_list"><b class="opponent_list_bold_name">bob</b>

  <div class="tableCell">
    <button class="opponent_list_button" type="button">Invite</button>
  </div>
</div>
<div class="opponents_list"><b class="opponent_list_bold_name">harri</b>

  <div class="tableCell">
    <button class="opponent_list_button" type="button">Invite</button>
  </div>
</div>
<div class="opponents_list"><b class="opponent_list_bold_name">harri2</b>

  <div class="tableCell">
    <button class="opponent_list_button" type="button">Invite</button>
  </div>
</div>
<div class="opponents_list"><b class="opponent_list_bold_name">kaleeem</b>

  <div class="tableCell">
    <button class="opponent_list_button" type="button">Invite</button>
  </div>
</div>
<div class="opponents_list"><b class="opponent_list_bold_name">nehaaa</b>

  <div class="tableCell">
    <button class="opponent_list_button" type="button">Invite</button>
  </div>
</div>

＆＃13;

＆＃13;

＆＃13;

Answer 2

将您的按钮放入div中，将line-height和float: right添加到该div中。这是 JSFiddle

<div class="opponents_list">
    <b class="opponent_list_bold_name">bob</b>
    <div style="line-height: 3em; float: right;">
        <button class="opponent_list_button" type="button">Invite</button>
    </div>
</div>