Question

我在Google Material Design卡中有一个下拉列表。单击按钮时，下拉列表不会覆盖卡。我试图将z-index设置为更大的值，但它不起作用。

Answer 1

它不在卡外显示，因为它的父母有overflow:hidden属性。

所以，你需要为此添加css：

.mdl-card {
      overflow: visible !important;
}

＆＃13;

.status-card {
  min-height: 15% !important;
  display: block !important;
}
.mdl-card {
  overflow: visible !important;
}

.status-card > .mdl-card__supporting-text {
  margin-bottom:0px !important;
}

.status-card > .mdl-card__supporting-text > .mdl-cell--10-col {
  padding: 8% 0 8% 2%;
}

.status-card span,
color: black;
}

.status-card li:before,
content: '■';
padding-right: 0.5em;
font-size: 170%; /* or whatever */
}

.status-card ul,
max-height: 140px;
overflow-y: auto;
}

＆＃13;

<link href="https://cdnjs.cloudflare.com/ajax/libs/material-design-lite/1.1.3/material.min.css" rel="stylesheet"/>
<link href="https://storage.googleapis.com/code.getmdl.io/1.1.3/material.indigo-pink.min.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/material-design-lite/1.1.3/material.min.js"></script>

<div class="status-card mdl-card mdl-cell mdl-shadow--2dp mdl-cell--3-col">                  
  <div class="mdl-card__supporting-text mdl-grid mdl-grid--no-spacing" style="margin-left: 4%;">                        
    <button id="test1" class="mdl-button mdl-js-button mdl-button--raised" style="margin-top: 8%"></button>
    <ul class="mdl-menu mdl-js-menu mdl-js-ripple-effect mdl-js-ripple-effect--ignore-events" for="test1">
      <li class="mdl-menu__item" style="color: #cd8daa;"><span>xyz</span></li>
      <li class="mdl-menu__item" style="color: #cd8daa;"><span>yue</span></li>
      <li class="mdl-menu__item" style="color: #cd8daa;"><span>24</span></li>
    </ul>                       
    <div class="mdl-cell mdl-cell--6-col" style="display: flex; flex-flow: row wrap;">
      <h6 title="">TEST</h6>                            
    </div>                                     
  </div>
</div>

＆＃13;

Answer 2

添加溢出

.status-card {
    min-height: 15% !important;
    display: block !important;
    overflow:visible;
}

给这一个id =＆＃34; status-card-1＆＃34;

#status-card-1{
  z-index:20;
}

这里是fiddle

Answer 3

下拉列表不会覆盖卡片，因为“.mdl-card”具有“overflow：hidden”。您可以使用值“overflow：inherit”或“overflow：visible”

覆盖“.mdl-card”

如何让下拉列表覆盖外部卡？

3 个答案: