How to make hover state on row table with CSS grid layout

Question

This a table that created with CSS Grid Layout, but I have a problem with it, I can't make hover state on each row.

I only want use CSS for this.

Can anyone give me a solution for this?

.table {
  display: grid;
  grid-template-columns: [col-start] auto [col-end];
  grid-template-rows: [header-start] 50px [header-end row-start] auto [row-end];
  grid-auto-rows: auto;
  grid-auto-columns: auto;
  grid-gap: 1px;
}

.table>* {
  background: gray;
  padding: 10px;
}

.heading {
  background: navy;
  color: #fff;
  grid-row: header;
}

<div class="table">
  <div class="heading">Title 1</div>
  <div class="heading">Title 2</div>
  <div class="heading">Title 3</div>
  <div class="heading">Title 4</div>
  <div class="heading">Title 5</div>

  <div class="row">Row 1</div>
  <div class="row">Row 1</div>
  <div class="row">Row 1</div>
  <div class="row">Row 1</div>
  <div class="row">Row 1</div>

  <div class="row">Row 2</div>
  <div class="row">Row 2</div>
  <div class="row">Row 2</div>
  <div class="row">Row 2</div>
  <div class="row">Row 2</div>

  <div class="row">Row 3</div>
  <div class="row">Row 3</div>
  <div class="row">Row 3</div>
  <div class="row">Row 3</div>
  <div class="row">Row 3</div>
</div>

Answer 1

Here is a trick using pseudo-element. The idea is to use the element as a background and make it overflow on the left and right so that it will cover all the row. Like that if you hover on any element inside a row you change the color and it's like you changed the color of the whole row.

This trick involve few changes on the markup and also more CSS.

.table {
  display: grid;
  grid-template-columns: [col-start] auto [col-end];
  grid-template-rows: [header-start] 50px [header-end row-start] auto [row-end];
  grid-auto-rows: auto;
  grid-auto-columns: auto;
  grid-gap: 1px;
  overflow: hidden;
  background: gray;
}

.table>* {
  padding: 10px;
  position: relative;
}

.heading {
  background: navy;
  color: #fff;
  grid-row: header;
}

.row span {
  position: relative;
  z-index: 2;
}

.row:before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  right: -1000%;
  left: -1000%;
  z-index: 1;
}

.row:after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  right: -1px;
  width: 1px;
  z-index: 2;
  background-color: #fff;
}

.row:nth-child(5n+5)::after {
  bottom: -1px;
  right: 0;
  left: -1000%;
  height: 1px;
  z-index: 3;
  width: auto;
  top: auto;
  background-color: #fff;
}

.row:hover::before {
  background-color: red;
}

<div class="table">
  <div class="heading">Title 1</div>
  <div class="heading">Title 2</div>
  <div class="heading">Title 3</div>
  <div class="heading">Title 4</div>
  <div class="heading">Title 5</div>

  <div class="row"><span>Row 1</span></div>
  <div class="row"><span>Row 1</span></div>
  <div class="row"><span>Row 1</span></div>
  <div class="row"><span>Row 1</span></div>
  <div class="row"><span>Row 1</span></div>

  <div class="row"><span>Row 2</span></div>
  <div class="row"><span>Row 2</span></div>
  <div class="row"><span>Row 2</span></div>
  <div class="row"><span>Row 2</span></div>
  <div class="row"><span>Row 2</span></div>

  <div class="row"><span>Row 3</span></div>
  <div class="row"><span>Row 3</span></div>
  <div class="row"><span>Row 3</span></div>
  <div class="row"><span>Row 3</span></div>
  <div class="row"><span>Row 3</span></div>
</div>

Answer 2

Since you are treating this as a table, where the elements stay in the same row, you can also wrap each row in a DIV with "display" set to "contents." This forms an innocuous parent element that you use for hover, and then style the child elements. (display: contents is not yet supported in Edge, though.)

.table {
  display: grid;
  grid-template-columns: [col-start] auto [col-end];
  grid-template-rows: [header-start] 50px [header-end row-start] auto [row-end];
  grid-auto-rows: auto;
  grid-auto-columns: auto;
  grid-gap: 1px;
  overflow: hidden;
  background: gray;
}

.table .row, .table .heading{
  padding: 10px;
  position: relative;
}

.heading {
  background: navy;
  color: #fff;
  grid-row: header;
}

.row span {
  position: relative;
  z-index: 2;
}

.rowWrapper{
  display: contents;
}

.rowWrapper:hover div{
  background-color: orange;
}

<div class="table">

        <div class="heading">Title 1</div>
        <div class="heading">Title 2</div>
        <div class="heading">Title 3</div>
        <div class="heading">Title 4</div>
        <div class="heading">Title 5</div>
      
    <div class="rowWrapper">
        <div class="row"><span>Row 1</span></div>
        <div class="row"><span>Row 1</span></div>
        <div class="row"><span>Row 1</span></div>
        <div class="row"><span>Row 1</span></div>
        <div class="row"><span>Row 1</span></div>
    </div>

    <div class="rowWrapper">
        <div class="row"><span>Row 2</span></div>
        <div class="row"><span>Row 2</span></div>
        <div class="row"><span>Row 2</span></div>
        <div class="row"><span>Row 2</span></div>
        <div class="row"><span>Row 2</span></div>
    </div>
      
    <div class="rowWrapper">
        <div class="row"><span>Row 3</span></div>
        <div class="row"><span>Row 3</span></div>
        <div class="row"><span>Row 3</span></div>
        <div class="row"><span>Row 3</span></div>
        <div class="row"><span>Row 3</span></div>
    </div>
    
</div>

Answer 3

Here's my solution, based on sibling combinators.
The main part is:

.datacell:hover ~ .datarow {
    background-color: rgba(255,255,0,0.5);
}
.datacell:hover ~ .datarow + .datacell ~ .datarow{
    background-color: transparent;
}

Snippet:

.datatable{
    display:grid;
    grid-gap: 0;
    grid-template-columns: auto 1fr auto;
    position: relative;
}

.datarow{
    grid-column: 1 / 4;
    z-index: 0;
}

.datacell{
    z-index: 1;
    padding: 8px;
    border-bottom: 1px solid #c0c0c0;
}

.datacell:hover ~ .datarow {
    background-color: rgba(255,255,0,0.5);
}
.datacell:hover ~ .datarow + .datacell ~ .datarow{
    background-color: transparent;
}

.row-1{ grid-row: 1;}
.row-2{ grid-row: 2;}
.row-3{ grid-row: 3;}

.col-1{ grid-column: 1;}
.col-2{ grid-column: 2;}
.col-3{ grid-column: 3;}

<div class="datatable">
   <div class="datacell col-1 row-1">Row 1 Column 1</div>
   <div class="datacell col-2 row-1">Row 1 Column 2</div>
   <div class="datacell col-3 row-1">Row 1 Column 3</div>       
   <div class="datarow row-1"></div>

   <div class="datacell col-1 row-2">Row 2 Column 1</div>
   <div class="datacell col-2 row-2">Row 2 Column 2</div>
   <div class="datacell col-3 row-2">Row 2 Column 3</div>       
   <div class="datarow row-2"></div>

   <div class="datacell col-1 row-3">Row 3 Column 1</div>
   <div class="datacell col-2 row-3">Row 3 Column 2</div>
   <div class="datacell col-3 row-3">Row 3 Column 3</div>       
   <div class="datarow row-3"></div>

</div>

The html must be structured so that a .datarow element closes the virtual grid row and spans all the preceding cells. Explicitation of the positioning inside the grid is needed in order to let cells and rows overlap.

Answer 4

I had this problem. First, i am curious to know why if you are using display grid, how come you are not using the grid-item class? is that not necessary? I think it is. Anyway, the answer is, you need to give all your div elements the grid-item class and set the position to Relative.

.grid-item {
position: relative;

}

Answer 5

I have solution for your problem. The example below:

.grid .row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid gray;
}
.grid .row div {
  padding: 10px;
  display: flex;
  align-items: center;
}
.grid .row:last-child {
  border: none;
}
.grid .row:hover {
  background-color: #cccccc;
  transition: .2s all;
}

<div class='grid'>
  <div class='row'>
    <div>Header</div>
    <div>Header</div>
    <div>Header</div>
    <div>Header</div>
  </div>
  <div class='row'>
    <div>Content</div>
    <div>Content</div>
    <div>Content</div>
    <div>Content</div>
  </div>
  <div class='row'>
    <div>Content</div>
    <div>Content</div>
    <div>Content</div>
    <div>Content</div>
  </div>
  <div class='row'>
    <div>Content</div>
    <div>Content</div>
    <div>Content</div>
    <div>Content</div>
  </div>
</div>