表格中的CSS大小统一的单元格

Question

我正在创建一个带有包含表格的弹出框的网站。经过数小时的尝试，尝试使用具有 table-layout 属性的其他组合，表格仍无法统一呈现。 CSS如下所示。

#popup {
position: absolute;
height: 50%;
width: 50%;
left: 25%;
top: 25%;
background: white;
border: solid black 1px;
text-align: center;

}


table{
  table-layout: fixed; /* Cells are uniformly sized */;
  width: 100%;
  height: 100%;

}

呈现了下表。

如何确保所有单元格大小一致？

Answer 1

我相信您最好使用CSS Grid进行这种布局。

要学习CSS网格，我建议您使用Grid Garden和Grid Critters游戏化教程（后者确实收费）。两家公司也都有flexbox教程（Flexbox Froggy和Flexbox Zombies都是免费的）

无论如何，这是使用Grid进行的布局的可执行复制：

body {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  display: flex;
  justify-content: center;
  
  background-image: url("https://cdn.pixabay.com/photo/2017/09/14/22/42/milky-way-2750627_960_720.jpg") ;
}

.wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  
  background-color: white;
  border: 1px solid black;
  border-radius: 5px;
  width: 90%;
  padding: 0 10px;
}

.grid {
  align-self: stretch;
  padding-bottom: 15px;
  
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-gap: 5px;
  justify-content: center;
  align-items: center;
}

.heading, .col-1 {
  display: flex;
  align-items: center;
  justify-content: center;
}

.heading {
  font-size: 1.5em;
  font-weight: bold;
  padding-top: 10px;
}

.col-1 {
  background-color: #D3D3D3;
  height: 100px;
  border: 1px solid black;
}

.blank {
  grid-column: 2 / span 3;
}

<div class="wrap">
  <h2>Date</h2>
  <div class="grid">
    <div class="heading">
      H103
    </div>
    <div class="blank"></div>
    <div class="col-1">Period 1</div>
    <div class="col-1">Period 2</div>
    <div class="col-1">Period 3</div>
    <div class="col-1">Period 4</div>
    <div class="heading">
      H104
    </div>
    <div class="blank"></div>
    <div class="col-1">Period 1</div>
    <div class="col-1">Period 2</div>
    <div class="col-1">Period 3</div>
    <div class="col-1">Period 4</div>

    <div class="heading">
      H105
    </div>
    <div class="blank"></div>
    <div class="col-1">Period 1</div>
    <div class="col-1">Period 2</div>
    <div class="col-1">Period 3</div>
    <div class="col-1">Period 4</div>
    <div class="heading">
      H107
    </div>
    <div class="blank"></div>
    <div class="col-1">Period 1</div>
    <div class="col-1">Period 2</div>
    <div class="col-1">Period 3</div>
    <div class="col-1">Period 4</div>

  </div>
</div>