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Why border-top doesn't give same border width while using display:table in div area?

May 26, 2022

I have the following HTML file: index.html

@import url('https://fonts.googleapis.com/css?family=Open+Sans');
.div_table {
  display: table;
  border-collapse: collapse;
}

.div_table_row {
  display: table-row;
}

.div_table_header {
  font-weight: bold;
  text-align: center;
}

.div_table_cell {
  display: table-cell;
  padding-left: 10px;
  padding-right: 10px;
  font-family: "Open Sans";
  font-size: 11px;
  border-top: 1px solid #000000;
}

<!doctype html>
<html lang="en">

<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Test tera</title>
  <meta name="Tera_tutorial" content="Tera tutorial">
  <meta name="author" content="Practice">
  <link rel="stylesheet" type="text/css" href="styles.css">
  <script src=""></script>
</head>

<body>


  <div class="div_table">
    <!-- Table header -->
    <div class="div_table_row">
      <div class="div_table_cell div_table_header">
        <p>First name</p>
      </div>
      <div class="div_table_cell div_table_header">
        <p>Last name</p>
      </div>
      <div class="div_table_cell div_table_header">
        <p>Email</p>
      </div>
    </div>

    <!-- Users table content -->

    <div class="div_table_row">
      <div class="div_table_cell">
        <p>fname-01</p>
      </div>
      <div class="div_table_cell">
        <p>lname-01</p>
      </div>
      <div class="div_table_cell">
        <p>fname-01.lname-01@mycorporate.com</p>
      </div>
    </div>

    <div class="div_table_row">
      <div class="div_table_cell">
        <p>fname-02</p>
      </div>
      <div class="div_table_cell">
        <p>lname-02</p>
      </div>
      <div class="div_table_cell">
        <p>fname-02.lname-02@mycorporate.com</p>
      </div>
    </div>

    <div class="div_table_row">
      <div class="div_table_cell">
        <p>fname-03</p>
      </div>
      <div class="div_table_cell">
        <p>lname-03</p>
      </div>
      <div class="div_table_cell">
        <p>fname-03.lname-03@mycorporate.com</p>
      </div>
    </div>

  </div>


</body>

</html>

If I open my HTML file in Firefox everything works as expected and I see above each row (the border-top I mean) a black thin border (1px). However if I open the same file with Google Chrome, Microsoft Edge, Brave, etc. I can see that the first and 3rd row have ticker upper borders.

Can you please explain where is my mistake?
Thanks in advance

[EDIT]:
Here is what I see in Firefox

But here is the different result (look at the 1st and 3rd row) in Google Chrome

>Solution :

Try removing the border-collapse property that you set on your .div_table class.

@import url('https://fonts.googleapis.com/css?family=Open+Sans');
.div_table {
  display: table;
}

.div_table_row {
  display: table-row;
}

.div_table_header {
  font-weight: bold;
  text-align: center;
}

.div_table_cell {
  display: table-cell;
  padding-left: 10px;
  padding-right: 10px;
  font-family: "Open Sans";
  font-size: 11px;
  border-top: 1px solid #000000;
}

<!doctype html>
<html lang="en">

<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Test tera</title>
  <meta name="Tera_tutorial" content="Tera tutorial">
  <meta name="author" content="Practice">
  <link rel="stylesheet" type="text/css" href="styles.css">
  <script src=""></script>
</head>

<body>


  <div class="div_table">
    <!-- Table header -->
    <div class="div_table_row">
      <div class="div_table_cell div_table_header">
        <p>First name</p>
      </div>
      <div class="div_table_cell div_table_header">
        <p>Last name</p>
      </div>
      <div class="div_table_cell div_table_header">
        <p>Email</p>
      </div>
    </div>

    <!-- Users table content -->

    <div class="div_table_row">
      <div class="div_table_cell">
        <p>fname-01</p>
      </div>
      <div class="div_table_cell">
        <p>lname-01</p>
      </div>
      <div class="div_table_cell">
        <p>fname-01.lname-01@mycorporate.com</p>
      </div>
    </div>

    <div class="div_table_row">
      <div class="div_table_cell">
        <p>fname-02</p>
      </div>
      <div class="div_table_cell">
        <p>lname-02</p>
      </div>
      <div class="div_table_cell">
        <p>fname-02.lname-02@mycorporate.com</p>
      </div>
    </div>

    <div class="div_table_row">
      <div class="div_table_cell">
        <p>fname-03</p>
      </div>
      <div class="div_table_cell">
        <p>lname-03</p>
      </div>
      <div class="div_table_cell">
        <p>fname-03.lname-03@mycorporate.com</p>
      </div>
    </div>

  </div>


</body>

</html>