How css adapts the spacing of equal fractions

my page wants to put four book covers in a row, each with a fixed width, and if you zoom the browser, the spacing will be narrowed.
my problem now is that I don"t know how to adapt the spacing to the browser width. In addition, it is hoped that there is no margin between the leftmost and rightmost of the whole.
Let me ask you how to think.

my code:

<div class="four_cover">
       <div class="row">
        <div class="cover">
          <img src="../images/book2.jpg" alt="">
          <h3 class="title"></h3>
          <p class="author_small">

</div> </div> <div class="row"> <div class="cover"> <img src="../images/book3.jpg" alt=""> <h3 class="title"></h3> <p class="author_small"> /

</div> </div> <div class="row"> <div class="cover"> <img src="../images/book4.jpg" alt=""> <h3 class="title"></h3> <p class="author_small">[]

</div> </div> <div class="row"> <div class="cover"> <img src="../images/book5.jpg" alt=""> <h3 class="title"></h3> <p class="author_small">[]

</div> </div> </div>

css:

.four_cover {
    margin: 0 20px 0 20px;
}


.row {
    width: 100%;
    box-sizing: border-box;
    display: inline;


    .cover {
      float: left;
      width: 200px;
      height: 290px;
      
      box-shadow: 0px 4px 12px 0px rgba(0,0,0,.1);
      margin: 0 114px 0 0;

  


      img { 
          width: 100%;
          height: 100%;
          border-radius: .5rem 0 0 .5rem; 
          

      }
      .title {
          font-size: 1.25rem;
          font-weight: 500;
          margin: 1rem 0 0 0;
          line-height: 1.875rem;

      }
      .author_small {
        font-size: 0.875rem;
        color: $T3;
        line-height: 1.675rem;
        margin: 0;
      }

    }
    
}
}
Apr.12,2021

I wrote a relatively simple one here:
https://codepen.io/Ash-sc/pen.

think of it this way:
Picture div uses display:inline-block; and then percentage width.
the parent of the picture div adds font-size: 0; prevents the picture div from wrapping.
Picture div sets text-align:center; to center the picture.


flex layout is recommended, and one alignment option is that space between, meets the requirement.

you can also use the calc function to calculate the middle margin:

.cover {
    margin: 0;
}

.cover ~ .cover {
    margin-left: calc(33.333% - 266.667px);
}

personal suggestion to use flexible layout
other ideas can also try


you can use flex layout, parent element:
display: flex;
justify-content: space-between;


can you use flex


use calc


use table layout
or fixed 25% of each column width
.

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