HTML5 - Basic Exercises, Practice, Solution

Last update on August 19 2022 21:50:51 (UTC/GMT +8 hours)

[An editor is available at the bottom of the page to write and execute the scripts.]

64. How to define a group of related options in a drop-down list?

HTML Code:

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Group of related Option</title>
</head>
<body>
</body>
</html>

Try it in the following editor or see the solution.

a. How to specify that an option-group should be disabled?

b. How to specify a label for an option-group?

See the Pen html css common editor by w3resource (@w3resource) on CodePen.

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HTML-CSS: Tips of the Day

Why is a div with "display: table-cell;" not affected by margin?

Consider using the border-spacing property instead.

Note it should be applied to a parent element with a display:table layout and border-collapse:separate.

Example:

HTML

<div class="table">
    <div class="row">
        <div class="cell">123</div>
        <div class="cell">456</div>
        <div class="cell">879</div>
    </div>
</div>

CSS

.table {display:table;border-collapse:separate;border-spacing:5px;}
.row {display:table-row;}
.cell {display:table-cell;padding:5px;border:1px solid black;}

Ref: https://bit.ly/3anhww6

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