网格项跨度不会超过1列

Question

无论我将"grid- column“设置为什么值，橙色框都不会跨越多个列。

为什么会这样呢？

我尝试过以下几种方法:组合：(这是.hr-3项)

grid-column: 6 / span 9; grid-column: 6 / 9; grid-column: 2 / 7; grid-column: 2 / span 9;

我三次确认我的目标是正确的。

似乎什么都不起作用..

​

@import url('https://fonts.googleapis.com/css?family=Montserrat|Teko');
html, body {
  background: transparent;
  width: 100%;
  height: 100%;
}
#a {
  margin: 50px 0 0 50px;
  width: 70%;
  height: 70%;
  background: rgb(250,250,250);
  display: grid;
  grid-template-columns: auto auto 1px auto repeat(6, 2fr);
  grid-template-rows: auto repeat(9,1fr);
  //transform: rotate(-45deg);
  grid-gap: 5px;
}
.item {
  //background: rgba(100,100,0,0.02);
  font-family: 'Montserrat', sans-serif;
}
.item-1 {
  grid-column: 1 / 2;
  grid-row: 1 / 2;
}
.item-2 {
  grid-column: 2 / 3;
  grid-row: 1 / span 3;
  writing-mode: vertical-rl;
  text-orientation: upright;
  display: flex;
  align-items: center;
  padding-top: 3px;

}
.item-3 {
  grid-column: 4 / 5;
  grid-row: 1 / span 3;
   writing-mode: vertical-rl;
  text-orientation: upright;
  display: flex;
  align-items: center;
  padding-top: 3px;
}
.item-4 {
  grid-column: 5 / 6;
  grid-row: 1 / 1;
  
}
.hr-1 {
  grid-column: 3 / 4;
  grid-row: 2 / span 3;
  background: rgba(0,0,0,0.9);
}
.hr-2 {
  grid-column: 6 / 7;
  grid-row: 1 / span 8;
  border-left: 25px solid red;
 
}
.hr-3 {
  grid-column: 6 / span 9;  // <------- DOESN'T WORK?
  grid-row: 6/8;
  border: 25px solid orange;
}

<div id="a">
  <div class="item item-1"><b>John</b></div>
  <div class="item item-2"><b>A</b>lexander</div>
  <hr class="hr-1"/>
  <div class="item item-3"><b>B</b>lue</div>
  <div class="item item-4"><b>Peterson</b></div>
  <div class="item item-5"></div>
  <hr class="hr-2"/>
  <hr class="hr-3"/>
  <hr class="hr-4"/>
</div>

​

Answer 1

hr有一个默认的边际设置，它造成了这个问题。使它们等于0。

默认的边距设置为auto，因此它会在轨道内对齐您的项目(一个空项目)，这会让您认为您的元素没有跨越所需的列。在所有情况下，您将看到的是您创建的50px边框(left+right)

​

@import url('https://fonts.googleapis.com/css?family=Montserrat|Teko');
html, body {
  background: transparent;
  width: 100%;
  height: 100%;
}
#a {
  margin: 50px 0 0 50px;
  width: 70%;
  height: 70%;
  background: rgb(250,250,250);
  display: grid;
  grid-template-columns: auto auto 1px auto repeat(6, 2fr);
  grid-template-rows: auto repeat(9,1fr);
  //transform: rotate(-45deg);
  grid-gap: 5px;
}
.item {
  //background: rgba(100,100,0,0.02);
  font-family: 'Montserrat', sans-serif;
}
.item-1 {
  grid-column: 1 / 2;
  grid-row: 1 / 2;
}
.item-2 {
  grid-column: 2 / 3;
  grid-row: 1 / span 3;
  writing-mode: vertical-rl;
  text-orientation: upright;
  display: flex;
  align-items: center;
  padding-top: 3px;

}
.item-3 {
  grid-column: 4 / 5;
  grid-row: 1 / span 3;
   writing-mode: vertical-rl;
  text-orientation: upright;
  display: flex;
  align-items: center;
  padding-top: 3px;
}
.item-4 {
  grid-column: 5 / 6;
  grid-row: 1 / 1;
  
}
.hr-1 {
  grid-column: 3 / 4;
  grid-row: 2 / span 3;
  background: rgba(0,0,0,0.9);
}
.hr-2 {
  grid-column: 6 / 7;
  grid-row: 1 / span 8;
  border-left: 25px solid red;
 
}
.hr-3 {
  grid-column: 6 / span 9;
  grid-row: 6/8;
  border: 5px solid orange;
}

hr {
 margin:0;
}

<div id="a">
  <div class="item item-1"><b>John</b></div>
  <div class="item item-2"><b>A</b>lexander</div>
  <hr class="hr-1"/>
  <div class="item item-3"><b>B</b>lue</div>
  <div class="item item-4"><b>Peterson</b></div>
  <div class="item item-5"></div>
  <hr class="hr-2"/>
  <hr class="hr-3"/>
  <hr class="hr-4"/>
</div>

​

以下是使用dev工具和保留默认页边距可以看到的内容：

​

​

您可以看到，该元素采用9列和2行，边距将所有内容居中。