如何在网格项和容器之间获得网格间隙?

How to get a grid-gap between the grid item and the container?

如何获得左侧间隙?如您所见,Box1 位于左侧 'sticky' 我使用 grid-gap: 1em; 但它仅适用于顶部底部和右侧?

/*Defining the font and pixels so we can work with em later*/
body {
    font-family: 'Poppins', sans-serif;
    font-size: 25px;
}

/*BG gradient layer + bg elements*/
.BG_gradient {
    background-image: linear-gradient(-135deg, #FEE140 0%, #FA709A 100%);
    /*Padding = 10vh top + 10vh bottom = 20vh*/
    padding: 10vh 5vh 10vh 5vh;
    /*Padding top and bottom is already 20vh combined so height left is 70vh*/
    height: 80vh;
}

/* wrapper of the content*/
.wrapper {
    /*Here we define the start of the grid*/
    display: grid;
    /*This means left colom is 1fr, middle 2fr, and right 1fr so total it's 4fr*/
    grid-template-columns: 1fr 2fr 1fr; 
    
    /*Rows = vertical so min it should be 95px atleast and max it's on auto*/
    grid-auto-rows: minmax(95px, auto);   
    grid-gap: 1em;

    /* BG visuals: */
    background: #EEF3F4;
    box-shadow: 0 0 90px 0 rgba(0,0,0,0.10);
    border-radius: 15px;
    height: 500px;
}
.header {
    grid-column: 4/4;
}
.left {
    background-color: rgba(230,45,45,0.50);
}
.middle {
    background-color: rgba(50,115,180,0.50);
}
.right {
    background-color: rgba(120,230,45,0.50);
}
<div class="BG_gradient">
  <div class="wrapper">
    <section class="header"></section>
    <section class="mainbox left">Box 1</section>
    <section class="mainbox middle">Box 2</section>
    <section class="mainbox right">Box 3</section>
  </div>
</div>

https://jsfiddle.net/ZanicL3/Ldtcqdtb/

grid-gap 属性 仅适用于网格项之间。它从不应用于网格项和网格容器之间。

如果您想要物品和容器之间有间隙,请在容器上使用 padding

.wrapper {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: minmax(95px, auto);   
    grid-gap: 1em;
    padding: 1em; /* NEW */
}

https://jsfiddle.net/Ldtcqdtb/3/

这是一种替代方法,允许您使用折叠轨道将网格(或弹性)间隙应用到对象的 'outer'。

此方法非常适合父元素可能不总是相同的动态内容,提供强大的单一 属性 来设置 margins/gutters。

编辑:以下示例演示了一个显式网格,但是当结合使用 grid-row-start/end grid-column-start/end 属性时,相同的方法可用于隐式网格。

.parent {
    display: grid;
    grid: 0 repeat(3, auto) 0 / 0 repeat(3, auto) 0;
    grid-template-areas: " . . . . . "
                         " . a b c . "
                         " . d e f . "
                         " . g h i . "
                         " . . . . . ";   
    gap: 0.5em;
    width: 100%;
    height: 100vh;
    background: #ddd;
}

.child {
    grid-area: var(--position);
    width: 100%;
    height: 100%;
    background: #fff;
}

body {
    margin: 0;
}
<div class="parent">
  <div class="child" style="--position: a;"></div>
  <div class="child" style="--position: b;"></div>
  <div class="child" style="--position: c;"></div>
  <div class="child" style="--position: d;"></div>
  <div class="child" style="--position: e;"></div>
  <div class="child" style="--position: f;"></div>
  <div class="child" style="--position: g;"></div>
  <div class="child" style="--position: h;"></div>
  <div class="child" style="--position: i;"></div>
</div>