How to determine button placement based on the content present on the page

I'm struggling to find the right CSS positioning for a button on my page. I want the button to stay fixed in a specific location, but when there's a lot of content on the page, I need it to adjust its position accordingly.

Initially, I want the button to be at the bottom of the page when there isn't much content, as shown in the code snippet below:

#Button
{
  position: fixed;
  height:90px;
  width:220px;
  left:16%;
  top:70%;
  border:none;
  background:none;
}

Then, when there's a significant amount of content, I'd like the button to move down using the following code:

#Button
{
  position: absolute;
  height:90px;
  width:220px;
  left:16%;
  padding-top:10%;
  padding-bottom: 13%;
  border:none;
  background:none;
}

Can anyone lend a hand with this? I've tried looking online for solutions but haven't been able to make sense of it.

javascripthtmlcssbuttoncss-position

Answer №1

To achieve the desired outcome using CSS only, you can create a wrapper block element (such as a <div>) around all your content and place the <button> directly under that element.

HTML:

<div id="wrapper">
    <!-- other content goes here -->
    <button id="button">Sample</button>
</div>

CSS:

#wrapper {
    position: relative;
    min-height: 100vh;
}

#button {
    position: absolute;
    bottom: 0;
}

It's important to note that some older browsers may not support the use of the vh unit and could display buggy behavior. Be sure to check compatibility at this link before implementing it in your project.

Answer №2

I am not familiar with your structure, but I will do my best to assist you.

Let's utilize this markup:

<div class="parent">
    <p class="texto">Your content should be placed here!</p>
    <input type="button" value="OK" />
</div>

To address your issue, I recommend using a min-height in the content area.

.parent .texto {
  min-height: 100px;
}

By doing so, the button will remain in a consistent position when there is minimal content. It will also adjust its position if there is an abundance of content.

Code Snippet:

.parent {
  width: 200px;
  padding: 5px;
  border: 1px solid black;
  float: left;
  margin: 5px;
}
.parent .texto {
  min-height: 100px;
}
<div class="parent">
  <p class="texto">
    Small text!
  </p>
  <input type="button" value="OK" />
</div>

<div class="parent">
  <p class="texto">
    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Morbi mi urna, rhoncus vitae hendrerit ut, hendrerit a turpis. Phasellus sed rhoncus augue, eget vehicula neque. Vivamus lobortis, velit vitae maximus porttitor, erat nulla scelerisque est, nec
    sagittis diam diam id nisl. Maecenas dictum lacinia dignissim. Duis eget ligula fermentum, vulputate dui sed, vestibulum ipsum. Duis non consectetur dolor. Nunc urna eros, tincidunt id nisl id, dapibus imperdiet orci. Mauris posuere convallis ullamcorper.
  </p>
  <input type="button" value="OK" />
</div>

I hope this information proves helpful!

Answer №3

To properly position the element preceding this button, make sure to apply position:relative.

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