Tips for changing color when hovering over elements in a CSS grid

I am currently attempting to incorporate a hover effect into this CSS grid, but I have not been successful in my efforts. I experimented with transition and opacity techniques, but they did not work as expected. Can someone please point out what I may be doing wrong? Your assistance is greatly appreciated! The code snippet can be found below or you can view the page directly here

@media screen and (min-width:850px) {    
    .cards {
        display: grid;
        grid-template-columns: 1fr 1fr 1fr;
        column-gap: 10px;
    }
}


.card {
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: rgba(102, 153, 102, .9);
    padding: 2rem;
    height: 6rem;
    margin-top: 5px;
    margin-bottom: 5px;
    text-align: center;
    cursor: pointer;
    transition: color 2s;
}

.cards a {
    text-decoration: none !important;
    color: white !important;
}

.cards .card:hover {
    background-color: rgb(102, 153, 102);
}

<h2 style="text-align: center;">List of Neuro-Ophthalmic Conditions</h2>

<section class="cards">
<div class="card"><a href="https://www.nanosweb.org/anisocoria"><strong><span style="font-size:16px;">Anisocoria</span></strong></a></div>

<div class="card"><strong><span style="font-size:16px;"><a href="https://www.nanosweb.org/GiantCellArteritis" target="_blank">Giant Cell Arteritis</a></span></strong></div>

<div class="card"><strong><span style="font-size:16px;"><a href="https://www.nanosweb.org/i4a/pages/index.cfm?pageid=4166" target="_blank">Homonymous Hemianopsia</a></span></strong></div>

<div class="card"><strong><span style="font-size:16px;"><a href="https://www.nanosweb.org/IIH">Idiopathic Intracranial Hypertension/ Pseudotumor Cerebri</a></span></strong></div>

<div class="card"><strong><span style="font-size:16px;"><a href="https://www.nanosweb.org/i4a/pages/index.cfm?pageid=4188" target="_blank">Leber Hereditary Optic Neuropathy</a></span></strong></div>

<div class="card"><strong><span style="font-size:16px;"><a href="https://www.nanosweb.org/i4a/pages/index.cfm?pageid=4155" target="_blank">Myasthenia Gravis</a></span></strong></div>

<div class="card"><strong><span style="font-size:16px;"><a href="https://www.nanosweb.org/drusen">Optic Disc Drusen</a></span></strong></div>

<div class="card"><strong><span style="font-size:16px;"><a href="https://www.nanosweb.org/PituitaryTumor">Pituitary Tumor</a></span></strong></div>

<div class="card"><strong><span style="font-size:16px;"><a href="https://www.nanosweb.org/ThyroidEyeDisease" target="_blank">Thyroid Eye Disease</a></span></strong></div>

<div class="card"><strong><span style="font-size:16px;"><a href="https://www.nanosweb.org/TransientVisualLoss" target="_blank">Transient Visual Loss</a></span></strong></div>
</section>
csshovercss-grid

Answer №1

To activate the hover effect on elements with the card class, use the :hover selector as demonstrated below:

.cards {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  column-gap: 10px;
}

.card {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: rgb(102, 153, 102, 0.9);
  padding: 2rem;
  height: 6rem;
  overflow: hidden;
  margin-top: 5px;
  margin-bottom: 5px;
  text-align: center;
  cursor: pointer;
  transition: color 2s;
}

.card:hover {
  background-color: #336699;
}

.cards a {
  text-decoration: none;
  color: white;
}
<section class="cards">
  <div class="card"><a href="https://www.nanosweb.org/anisocoria"><strong><span style="font-size:16px;">Anisocoria</span></strong></a></div>

  <div class="card"><strong><span style="font-size:16px;"><a href="https://www.nanosweb.org/GiantCellArteritis" target="_blank">Giant Cell Arteritis</a></span></strong></div>

  <div class="card"><strong><span style="font-size:16px;"><a href="https://www.nanosweb.org/i4a/pages/index.cfm?pageid=4166" target="_blank">Homonymous Hemianopsia</a></span></strong></div>

  <div class="card"><strong><span style="font-size:16px;"><a href="https://www.nanosweb.org/IIH">Idiopathic Intracranial Hypertension/ Pseudotumor Cerebri</a></span></strong></div>

  <div class="card"><strong><span style="font-size:16px;"><a href="https://www.nanosweb.org/i4a/pages/index.cfm?pageid=4188" target="_blank">Leber Hereditary Optic Neuropathy</a></span></strong></div>

  <div class="card"><strong><span style="font-size:16px;"><a href="https://www.nanosweb.org/i4a/pages/index.cfm?pageid=4155" target="_blank">Myasthenia Gravis</a></span></strong></div>

  <div class="card"><strong><span style="font-size:16px;"><a href="https://www.nanosweb.org/drusen">Optic Disc Drusen</a></span></strong></div>

  <div class="card"><strong><span style="font-size:16px;"><a href="https://www.nanosweb.org/PituitaryTumor">Pituitary Tumor</a></span></strong></div>

  <div class="card"><strong><span style="font-size:16px;"><a href="https://www.nanosweb.org/ThyroidEyeDisease" target="_blank">Thyroid Eye Disease</a></span></strong></div>

  <div class="card"><strong><span style="font-size:16px;"><a href="https://www.nanosweb.org/TransientVisualLoss" target="_blank">Transient Visual Loss</a></span></strong></div>
</section>

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