Is there a way to create a textarea that dynamically expands to fill the available space within a div, while maintaining fixed height offsets from the top and bottom? The CSS code below achieves this effect in Chrome, but Firefox displays the textarea with a default height, resulting in extra space at the bottom. Any ideas on how to achieve consistent behavior across all browsers?
#add-comment-text
{
position: absolute;
left: 5px;
top: 50px;
bottom: 50px;
width: 99%;
}
If you want to incorporate dynamic calculations in your CSS, consider using the css calc function:
html, body {
width: 100%;
height: 100%;
margin: 0;
padding: 0;
font-family: 'Roboto', sans-serif;
}
#add-comment-pane
{
height: 100%;
}
#add-comment-header
{
position: absolute;
top: 10px;
left: 10px;
}
#add-comment-text
{
position: absolute;
left: 5px;
top: 50px;
bottom: 50px;
width: 99%;
height: calc(100% - 100px); <!-- HERE -->
}
#add-comment-button
{
position: absolute;
bottom: 10px;
right: 10px;
}<div id="add-comment-pane">
<div class="unselectable" id="add-comment-header">
Comment on:
<a href="https://daringfireball.net/projects/markdown/syntax" style="text-decoration: none" target="_blank">markdown</a>.
</div>
<textarea id="add-comment-text"></textarea>
<button class="pure-button pure-button-primary" id="add-comment-button">Post Comment</button>
</div>Include height in your styling for the textarea:
#comment-section {
position: absolute;
left: 5px;
top: 50px;
bottom: 50px;
width: 99%;
height:85%;
}
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