我在HTML格式的网络日历原型中遇到了一个奇怪的问题。
我正在使用bootstrap4并创建了一个带有“时间按钮”的表格，可以由用户选择。
每当我点击随机时间按钮时，超过3个“时间按钮”的表格（当出现溢出时）会变得更宽。我不想要这种效果。
jsfiddle：https://jsfiddle.net/gdwujum4/
有人可以解释为什么会这样吗？我错过了什么吗？
<!DOCTYPE html>
<html lang="en">
<head>
<title>test.html</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
<style>
.topcorner{
top: 0px;
right: 4px;
/* position: absolute; */
cursor:pointer;
}
.list-group{
height: 100px;
/* max-width: 90%; */
overflow-y: auto;
}
td {
background-color: lightgrey;
height : 130px;
max-width: 130px;
}
button {
min-height: 33% ;
max-height: 33% ;
margin-bottom: 0px;
}
</style>
<script type= "application/javascript">
$(document).ready(function(){
$( ".topcorner" ).on( "click", function ( e ) {
e.metaKey = true;
$(this).toggleClass("ui-selected");
$(this).parent().css( "background-color", "red" );
$( "button.list-group-item" ).each(function( index ) {
$(this).removeClass("active");
});
} );
//$( "li" ).on( "click", function ( e ) {
//funktioniert auch mit zukünftigen elementen
$(document).on("click","button.list-group-item",function(e){
e.metaKey = true;
$(this).toggleClass("active");
$( ".topcorner.ui-selected" ).each(function( index ) {
$(this).removeClass("ui-selected");
});
} );
}); </script>
</head>
<body>
<div class="container-fluid mx-0 px-0 mx-md-auto px-md-auto" style="max-width:911px">
<table class="table table-bordered" >
<thead>
<tr>
<th colspan="1" class="text-center">←</th>
<th colspan="5" class="text-center">Februar 2018</th>
<th colspan="1" class="text-center">→</th>
</tr>
</thead>
<thead>
<tr>
<th class="text-center">Mo</th>
<th class="text-center">Di</th>
<th class="text-center">Mi</th>
<th class="text-center">Do</th>
<th class="text-center">Fr</th>
<th class="text-center">Sa</th>
<th class="text-center">So</th>
</tr>
</thead>
<tbody>
<!-- Woche 1-->
<tr>
<td class="position-relative"></td>
<td class="position-relative"></td>
<td class="position-relative"></td>
<td class="position-relative"></td>
<td class="position-relative"></td>
<td class="position-relative"></td>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">1</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</tr>
<!-- Woche 2-->
<tr>
<!-- !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! -->
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">2</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">17:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">19:00</button>
</div>
</td>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">3</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">18:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">20:00</button>
</div>
</td>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">4</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">5</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">6</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">7</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">8</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
</tr>
<!-- Woche 3-->
<tr>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">9</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">10</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">11</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">12</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">13</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">14</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">15</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
</tr>
<!-- Woche 4-->
<tr>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">16</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">17</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">18</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">19</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">20</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">21</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">22</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
</tr>
<!-- Woche 5-->
<tr>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">23</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">24</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">25</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">26</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">27</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">28</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">29</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
</tr>
<!-- Woche 6-->
<tr>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">30</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
<td class="position-relative px-2 py-0">
<div class="position-absolute topcorner">31</div>
<div class="list-group text-center mt-4 mb-0">
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0" disabled>12:59</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">13:00</button>
<button type="button" class="list-group-item list-group-item-action pt-0 pb-0 pr-0 pl-0">15:00</button>
</div>
</td>
<td class="position-relative"></td>
<td class="position-relative"></td>
<td class="position-relative"></td>
<td class="position-relative"></td>
<td class="position-relative"></td>
</tr>
</tbody>
</table>
</div>
</body>
</html>
答案 0 :(得分：1)
您需要覆盖Bootstrap大纲......
https://jsfiddle.net/t0cnfp9k/2/
button.list-group-item.active,
button.list-group-item:focus{
outline: 0;
}