CSS Grid gutter导致列溢出，如何强制列宽符合

Question

我正在尝试创建一个相当简单的 12 列 CSS 网格框架并允许网格嵌套。

.grid {
    grid-template-columns: repeat($grid-column-count, minmax(0, 1fr));
    column-gap: 2rem;
}

我目前遇到一个问题，即在增加装订线宽度时，无论其中包含什么内容，小数列都会被推出嵌套网格容器。

我尝试在声明列时将 minmax 值设置为 0，但它仍然坚持扩展。我知道这是因为排水沟的宽度加起来超过了内容，但是有没有办法在不使用溢出属性的情况下强制它下降？

列正在被装订线和/或内容推送：

...当列应该容纳排水沟时：

Codepen

html {
  box-sizing: border-box;
}

*,
*:before,
*:after {
  box-sizing: inherit;
}

.container {
  display: grid;
  grid-template-columns: [left-gutter-start] auto [left-gutter-end] minmax(0, 960px) [main-content-end] auto [right-gutter-end];
  overflow-wrap: break-word;
}

.container>.grid {
  grid-column-start: left-gutter-end;
  grid-column-end: main-content-end;
}

.container>.grid.grid-breakout {
  grid-column-start: left-gutter-start;
  grid-column-end: right-gutter-end;
}

.grid {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  -webkit-column-gap: 2rem;
  column-gap: 2rem;
  grid-column-end: span 12;
}

.grid .grid {
  -webkit-column-gap: 2rem;
  column-gap: 2rem;
}

.grid .col-1 {
  grid-column-end: span 1;
}

.grid .col-2 {
  grid-column-end: span 2;
}

.grid .col-3 {
  grid-column-end: span 3;
}

.grid .col-4 {
  grid-column-end: span 4;
}

.grid .col-5 {
  grid-column-end: span 5;
}

.grid .col-6 {
  grid-column-end: span 6;
}

.grid .col-7 {
  grid-column-end: span 7;
}

.grid .col-8 {
  grid-column-end: span 8;
}

.grid .col-9 {
  grid-column-end: span 9;
}

.grid .col-10 {
  grid-column-end: span 10;
}

.grid .col-11 {
  grid-column-end: span 11;
}

.grid .col-12 {
  grid-column-end: span 12;
}

.grid .col-end {
  grid-column-end: -1;
}

.grid .colstart-start {
  grid-column-start: 1;
}

.grid .colstart-2 {
  grid-column-start: 3;
}

.grid .colstart-3 {
  grid-column-start: 4;
}

.grid .colstart-4 {
  grid-column-start: 5;
}

.grid .colstart-5 {
  grid-column-start: 6;
}

.grid .colstart-6 {
  grid-column-start: 7;
}

.grid .colstart-7 {
  grid-column-start: 8;
}

.grid .colstart-8 {
  grid-column-start: 9;
}

.grid .colstart-9 {
  grid-column-start: 10;
}

.grid .colstart-10 {
  grid-column-start: 11;
}

div[class*="col-"] {
  text-align: left;
  background-color: orange;
  font-size: 12px;
  font-family: sans-serif;
}

div[class*="col-"]:before {
  content: attr(class);
  display: inline-block;
  margin: 4px;
}

.container[class*="col-"]:before {
  display: none;
}

div[class*="col-"] div[class*="col-"] {
  background: lightgreen;
}

div[class*="col-"] div[class*="col-"]:after {
  content: " (nested)";
  display: inline-block;
  margin: 4px;
}

.grid {
  row-gap: 1rem;
}

.grid .grid {
  background: green;
}

.grid-breakout {
  background: red;
}

.container {
  -webkit-column-gap: 1rem;
  column-gap: 1rem;
  row-gap: 1rem;
  margin-bottom: 1rem;
}

<div class="container">
  <div class="grid">

    <div class="col-4"></div>
    <div class="col-4">
      <div class="grid">
        <div class="col-12"></div>
        <div class="col-3"></div>
        <div class="col-9"></div>
        <div class="col-2"></div>
        <div class="col-10"></div>
        <div class="col-1"></div>
        <div class="col-11"></div>
      </div>
    </div>
    <div class="col-4"></div>
    <div class="col-4"></div>
  </div>

  <div class="grid">
    <div class="col-6">
      <p>This is what I would want to happen...</p>
      <div class="grid">
        <div class="col-12"></div>
        <div class="col-3"></div>
        <div class="col-9"></div>
        <div class="col-2"></div>
        <div class="col-10"></div>
        <div class="col-1"></div>
        <div class="col-11"></div>
      </div>
    </div>
    <div class="col-6">
      <div class="grid">
        <div class="col-4"></div>
        <div class="col-8"></div>
      </div>
    </div>
  </div>
</div>

Answer 1

简短回答。

请记住，对于任何给定的网格，即使列没有内容，您也不应该将 gaps 乘以列的大小大于容器网格。

换句话说：gap * columns(0width) < gridWidth 否则会溢出。

例如，尝试将内部网格的间隙从 2rem 减少到 1rem，这样您的示例就可以工作了

Answer 2

.main {
    display: grid;
    grid-gap: 10px;
    grid-template-columns: repeat(12, 1fr);
    margin: 0 auto;
    width: 100%;
    max-width: 1280px;
}

.one, .two, .three, .four, .five, .six,
.seven, .eight, .nine, .ten, .eleven, .twelve {
    grid-column-end: span 12;
}

.nested {
    display: grid;
    grid-gap: 10px;
    grid-template-columns: repeat(12, 1fr);
}

.merge-two-rows { grid-row-end: span 2 }
.merge-three-rows { grid-row-end: span 3 }
.merge-four-rows { grid-row-end: span 4 }
.merge-five-rows { grid-row-end: span 5 }
.merge-six-rows { grid-row-end: span 6 }

@media only screen and (min-width: 481px) {
    .one { grid-column-end: span 1 }
    .two { grid-column-end: span 2 }
    .three { grid-column-end: span 3 }
    .four { grid-column-end: span 4 }
    .five { grid-column-end: span 5 }
    .six { grid-column-end: span 6 }
    .seven { grid-column-end: span 7 }
    .eight { grid-column-end: span 8 }
    .nine { grid-column-end: span 9 }
    .ten { grid-column-end: span 10 }
    .eleven { grid-column-end: span 11 }
}

资源：Smart 12 Column Grid with Nesting