What could be causing the CSS styling for a Bootstrap 4 button to fail when it's applied?

Starting my first Bootstrap project and running into issues with CSS for my button. Trying to change it to green but it's not working, even though it worked in the past.

This is the button I'm trying to style (the blue one):

https://i.sstatic.net/qqQ6j.png

Here is my code:

   button {
        padding-top: 200px;
        background-color: #388E3C;  
    }
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" rel="stylesheet"/>
    <div class="container">
        <div class="row">
          <div class="col-lg-6" id="function2">
            <div class="input-group" id="input">
                <div class="custom-file">
                  <input type="file" class="custom-file-input" id="inputGroupFile01"
                    aria-describedby="inputGroupFileAddon01">
                  <label class="custom-file-label" for="inputGroupFile01">Choose your p12 file...</label>
                </div>
            </div>;

            <button type="button" class="btn btn-primary btn-lg btn-block">Convert p12 to jks</button> <!-- This is the button! -->

        </div>
  
    </div>

Using padding to troubleshoot. Any help is appreciated!

htmlcssbootstrap-4

Answer №1

It appears to be a specificity issue,

Your CSS is targeting only button elements, which is less specific than targeting a class. This is why your styles are not being applied and are getting overridden by bootstrap's default class.

To solve this problem, consider adding your own class to the button in order to style it, or target the button along with a bootstrap class.

I would suggest avoiding the use of !important, as it is usually unnecessary.

button.btn {
  padding-top: 200px;
  background-color: #388E3C;
}
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" rel="stylesheet" />
<div class="container">
  <div class="row">
    <div class="col-lg-6" id="function2">
      <div class="input-group" id="input">
        <div class="custom-file">
          <input type="file" class="custom-file-input" id="inputGroupFile01" aria-describedby="inputGroupFileAddon01">
          <label class="custom-file-label" for="inputGroupFile01">Choose your p12 file...</label>
        </div>
      </div>

      <button type="button" class="btn btn-primary btn-lg btn-block">Convert p12 to jks</button>
      <!-- This is the button! -->

    </div>

  </div>

Answer №2

You have the option to tackle this problem using various methods.

  1. To resolve the issue, utilize button.btn {....} instead of button {....}.
  2. Create a class named selector for the button and then set the property (as demonstrated).

#cssBtn {
  padding-top: 200px;
  background-color: #388E3C;
}
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" rel="stylesheet" />
<div class="container">
  <div class="row">
    <div class="col-lg-6" id="function2">
      <div class="input-group" id="input">
        <div class="custom-file">
          <input type="file" class="custom-file-input" id="inputGroupFile01" aria-describedby="inputGroupFileAddon01">
          <label class="custom-file-label" for="inputGroupFile01">Choose your p12 file...</label>
        </div>
      </div>

      <button type="button" id="cssBtn" class="btn btn-primary btn-lg btn-block">Convert p12 to jks</button>
      <!-- This is the button! -->

    </div>

  </div>

Answer №3

It's likely that Boostrap's CSS file is taking precedence over yours. To fix this, make sure you load your CSS file after the Boostrap one. It would be a good idea to assign a custom class to the button element.

<button id="customButton" type="button" class="btn btn-primary btn-lg btn-block">Convert p12 to jks</button>

Next, update your CSS like so:

button#customButton {
padding-top: 200px;
background-color: #388E3C;  
}

Answer №4

After testing your exact HTML and CSS in a controlled environment, it seems that the issue could be related to the number of classes assigned to the button element.

class="btn btn-primary btn-lg btn-block"

You might have to make some changes to these classes as they may be overriding the styles for the button itself.

The most effective way to determine the cause is to experiment with the following:

button {
    padding-top: 200px!important;
    background-color: #388E3C;  
}

Keep in mind that using !important is not ideal practice, but it should help you identify and resolve the issue.

Answer №5

In case the green button is exactly what you are looking for, you can substitute btn btn-success for btn btn-primary

<div class="container">
    <div class="row">
      <div class="col-lg-6" id="function2">
        <div class="input-group" id="input">
            <div class="custom-file">
              <input type="file" class="custom-file-input" id="inputGroupFile01"
                aria-describedby="inputGroupFileAddon01">
              <label class="custom-file-label" for="inputGroupFile01">Choose your p12 file...</label>
            </div>
        </div>

        <button type="button" class="btn btn-success btn-lg btn-block">Convert p12 to jks</button> <!-- This will be the button! -->

    </div>

</div>

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