Popular syntax

Centering divs

  .items {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background: white;
  
    .item {
      max-width: 350px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1rem;
      padding: 1rem;
      align-self: center; 
      justify-self: center;
      
    }
  }

Centering Divs using autofit

The auto-fit keyword does the same as auto-fill, except for this: empty tracks are collapsed. since you have 1fr set as the max-size in the minmax() function, the extra space is distributed among both grid items

grid-template-columns: repeat(auto-fit, minmax(250px, max-content));

Centering Text Vertically in DIV

HTML Markup

<div class="main">
<div class="right"> <img src="https://picsum.photos/75/150?random=1" alt=""></div>
<div class="left"> <p>some text</p></div>
</div>

CSS Markup

.main{
  display: flex;
  align-items: center;
}

Dealing with images

img{width: 100%}
img{aspect-ratio: 1 / 1;
    object-fit: contain;}

or

 img{aspect-ratio: 1 / .5;}

Media Queries

/* On screens that are 992px or less, set the background color to blue */
@media screen and (max-width: 992px) {
 body {
   background-color: blue;
 }
}

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