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CSS CSS Transitions and Transforms Getting Started with CSS Transitions Transition Challenge

matteo boni
matteo boni
5,087 Points
Posted by matteo boni
matteo boni
5,087 Points

help with this task

Write a declaration that will transition only the height value of .collapsed.

style.css 
/* Complete the challenge by writing CSS below */

.collapsed {
    height: 0;
    overflow: hidden;

}

.expand:checked ~ .collapsed {
    height: 34vh;
  transition-duration:1s;
}
index.html 
<!DOCTYPE html>
<html>
<head>
    <title>CSS Transitions</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link href='https://fonts.googleapis.com/css?family=Open+Sans:400,300,600,700,800' rel='stylesheet' type='text/css'>
    <link rel="stylesheet" href="page.css">
    <link rel="stylesheet" href="style.css">
</head>
<body>
    <div class="container clearfix">

        <input type="checkbox" class="expand" id="expand"><label for="expand">Expand Height</label>

        <div class="collapsed">
            <h2>Chocolate cupcake dessert</h2>
            <p> Tiramisu apple pie sesame snaps lemon drops pie bonbon wafer sweet jujubes. Toffee cupcake wafer. Dessert jelly ice cream sweet roll chocolate bar toffee oat cake cotton candy sweet roll. Cotton candy sweet oat cake croissant macaroon gummies cake gummi bears bear claw. Tootsie roll biscuit marshmallow topping.</p>
        </div>

    </div>
</body>
</html>

1 Answer

Steven Parker
Steven Parker
229,708 Points
Steven Parker
Steven Parker
229,708 Points

The property that controls which property transitions is transition-property. You probably want to add it to the .collapsed rule so it will control the transition in both directions.

You could also use the shortcut property transition, which would allow you to specify both the property(ies) and durations at once.

:warning: SPOILER ALERT

Doing it that way would look like this:

.collapsed {
    height: 0;
    overflow: hidden;
    transition: height .6s;  /* <-- add this line */
}