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CSS Grid - move it behind the menu bar

Time：02-08

Problem: i am building a webpage and learning to use grids with CSS. But i am running into a problem with it, as the dropdown menu i have at the top of the page, goes BEHIND the grid-items.

i've tried using the z-index: -1; and z-index:1; on just about every block there is regarding both the menu and the grid. But so far have been unsuccesfull.

So here i am.

How do i do this??

A fiddle to see my "problem"
Here is a FIDDLE of the problem.

it might just be me which is missing something obvious, but i am still learning :D

.grid-container {
  display: grid;
  grid-template-columns: 350px 350px 350px;
  justify-content: center;
}

.grid-item {
  position: relative;
  border: 2px solid rgb(13, 7, 95);
  margin: 5px;
  padding-left: 20px;
  font-weight: bold;
}

.menu-bar {
  border-radius: 25px;
  height: -webkit-fit-content;
  height: -moz-fit-content;
  height: fit-content;
  display: inline-flex;
  background-color: rgba(0, 0, 0, 0.4);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  align-items: center;
  padding: 0 10px;
  margin: 50px 0 0 0;
}

.menu-bar li {
  list-style: none;
  color: white;
  font-family: sans-serif;
  font-weight: bold;
  padding: 12px 16px;
  margin: 0 8px;
  position: relative;
  cursor: pointer;
  white-space: nowrap;
}

.menu-bar li::before {
  content: " ";
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  transition: 0.2s;
  border-radius: 25px;
}

.menu-bar li:hover {
  color: black;
}

.menu-bar li:hover::before {
  background: linear-gradient(to bottom, #e8edec, #d2d1d3);
  box-shadow: 0px 3px 20px 0px black;
  transform: scale(1.2);
}

ul {
  list-style-type: none;
  margin: 10px;
  padding: 10px;
}

li {
  float: center;
}

li a,
.dropbtn {
  display: inline-block;
  color: black;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

li a:hover,
.dropdown:hover .dropbtn {
  background-color: red;
}

li.dropdown {
  display: inline-block;
}


.dropdown-content {
  display: none;
  position: absolute;
  background-color: #f9f9f9;
  min-width: 160px;
  box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);

}

.dropdown-content a {
  color: black;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
  text-align: left;
}

.dropdown-content a:hover {
  background-color: #f1f1f1;
  z-index: 1;
}

.dropdown:hover .dropdown-content {
  display: block;
  z-index: 1;
}
<ul >
  <li >
    <p>Test 1</p>
    <div >
      <p> test 1 </p>
      <p> test 2 </p>
      <p> test 3 </p>
      <p> test 4 </p>
    </div>
  </li>
  <li >
    <p>Test 2</p>
    <div >
      <p> test 1 </p>
      <p> test 2 </p>
      <p> test 3 </p>
      <p> test 4 </p>
    </div>
  </li>
  <li >
    <p>Test 3</p>
    <div >
      <p> test 1 </p>
      <p> test 2 </p>
      <p> test 3 </p>
      <p> test 4 </p>
    </div>
  </li>
  <li >
    <p>Test 4 </p>
  </li>
  <li >
    <p>Test 5 </p>
    <div >
      <p> test 1 </p>
      <p> test 2 </p>
      <p> test 3 </p>
      <p> test 4 </p>
    </div>
  </li>
</ul>
<div >
  <div >
    <p> hello world </p>
  </div>
</div>

CodePudding user response：

Remove position: relative from .grid-item:

.grid-container {
  display: grid;
  grid-template-columns: 350px 350px 350px;
  justify-content: center;
}

.grid-item {
  border: 2px solid rgb(13, 7, 95);
  margin: 5px;
  padding-left: 20px;
  font-weight: bold;
}

.menu-bar {
  border-radius: 25px;
  height: -webkit-fit-content;
  height: -moz-fit-content;
  height: fit-content;
  display: inline-flex;
  background-color: rgba(0, 0, 0, 0.4);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  align-items: center;
  padding: 0 10px;
  margin: 50px 0 0 0;
}

.menu-bar li {
  list-style: none;
  color: white;
  font-family: sans-serif;
  font-weight: bold;
  padding: 12px 16px;
  margin: 0 8px;
  position: relative;
  cursor: pointer;
  white-space: nowrap;
}

.menu-bar li::before {
  content: " ";
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  transition: 0.2s;
  border-radius: 25px;
}

.menu-bar li:hover {
  color: black;
}

.menu-bar li:hover::before {
  background: linear-gradient(to bottom, #e8edec, #d2d1d3);
  box-shadow: 0px 3px 20px 0px black;
  transform: scale(1.2);
}

ul {
  list-style-type: none;
  margin: 10px;
  padding: 10px;
}

li {
  float: center;
}

li a,
.dropbtn {
  display: inline-block;
  color: black;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

li a:hover,
.dropdown:hover .dropbtn {
  background-color: red;
}

li.dropdown {
  display: inline-block;
}


.dropdown-content {
  display: none;
  position: absolute;
  background-color: #f9f9f9;
  min-width: 160px;
  box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);

}

.dropdown-content a {
  color: black;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
  text-align: left;
}

.dropdown-content a:hover {
  background-color: #f1f1f1;
  z-index: 1;
}

.dropdown:hover .dropdown-content {
  display: block;
  z-index: 1;
}
<ul >
  <li >
    <p>Test 1</p>
    <div >
      <p> test 1 </p>
      <p> test 2 </p>
      <p> test 3 </p>
      <p> test 4 </p>
    </div>
  </li>
  <li >
    <p>Test 2</p>
    <div >
      <p> test 1 </p>
      <p> test 2 </p>
      <p> test 3 </p>
      <p> test 4 </p>
    </div>
  </li>
  <li >
    <p>Test 3</p>
    <div >
      <p> test 1 </p>
      <p> test 2 </p>
      <p> test 3 </p>
      <p> test 4 </p>
    </div>
  </li>
  <li >
    <p>Test 4 </p>
  </li>
  <li >
    <p>Test 5 </p>
    <div >
      <p> test 1 </p>
      <p> test 2 </p>
      <p> test 3 </p>
      <p> test 4 </p>
    </div>
  </li>
</ul>
<div >
  <div >
    <p> hello world </p>
  </div>
</div>

CodePudding user response：

you have to add 'z-index: -1;' to '.dropdown::before' and remove position: relative from .grid-item:

.grid-container {
  display: grid;
  grid-template-columns: 350px 350px 350px;
  justify-content: center;
}

.grid-item {
  border: 2px solid rgb(13, 7, 95);
  margin: 5px;
  padding-left: 20px;
  font-weight: bold;
}

.menu-bar {
  border-radius: 25px;
  height: -webkit-fit-content;
  height: -moz-fit-content;
  height: fit-content;
  display: inline-flex;
  background-color: rgba(0, 0, 0, 0.4);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  align-items: center;
  padding: 0 10px;
  margin: 50px 0 0 0;
}

.menu-bar li {
  list-style: none;
  color: white;
  font-family: sans-serif;
  font-weight: bold;
  padding: 12px 16px;
  margin: 0 8px;
  position: relative;
  cursor: pointer;
  white-space: nowrap;
}

.menu-bar li::before {
  content: " ";
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  transition: 0.2s;
  border-radius: 25px;
}

.menu-bar li:hover {
  color: black;
}

.menu-bar li:hover::before {
  background: linear-gradient(to bottom, #e8edec, #d2d1d3);
  box-shadow: 0px 3px 20px 0px black;
  transform: scale(1.2);
}

ul {
  list-style-type: none;
  margin: 10px;
  padding: 10px;
}

li {
  float: center;
}

li a,
.dropbtn {
  display: inline-block;
  color: black;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

li a:hover,
.dropdown:hover .dropbtn {
  background-color: red;
}

li.dropdown {
  display: inline-block;
}


.dropdown-content {
  display: none;
  position: absolute;
  background-color: #f9f9f9;
  min-width: 160px;
  box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);

}

.dropdown-content a {
  color: black;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
  text-align: left;
}

.dropdown-content a:hover {
  background-color: #f1f1f1;
  z-index: 1;
}

.dropdown:hover .dropdown-content {
  display: block;
  z-index: 1;
}
.dropdown::before {
  z-index: -1;
}
<ul >
  <li >
    <p>Test 1</p>
    <div >
      <p> test 1 </p>
      <p> test 2 </p>
      <p> test 3 </p>
      <p> test 4 </p>
    </div>
  </li>
  <li >
    <p>Test 2</p>
    <div >
      <p> test 1 </p>
      <p> test 2 </p>
      <p> test 3 </p>
      <p> test 4 </p>
    </div>
  </li>
  <li >
    <p>Test 3</p>
    <div >
      <p> test 1 </p>
      <p> test 2 </p>
      <p> test 3 </p>
      <p> test 4 </p>
    </div>
  </li>
  <li >
    <p>Test 4 </p>
  </li>
  <li >
    <p>Test 5 </p>
    <div >
      <p> test 1 </p>
      <p> test 2 </p>
      <p> test 3 </p>
      <p> test 4 </p>
    </div>
  </li>
</ul>
<div >
  <div >
    <p> hello world </p>
  </div>
</div>

I hope this solution helps

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