如何从我的 custom.css 文件中应用 btn btn-primary bootstrap class？

Question

I tried,

<input type="button" class="btn btn-primary">

I want this style in custom.css

Answer 1

If u want to copy content of bootstrap css class to your file and fire it from your file, download bootstrap files (find inside class u want, here is btn and btn-primary) and copy these classes to you file, and u can use it without linking to bootstrap files. U may also override bootstrap classes, it is up in what order u will link css files in your

better way and I think more moral;) is to write own btn btn-primary class using bootstrap modifier tool https://getbootstrap.com/docs/3.4/customize/

Answer 2

this style is for .btn class in bootstrap:

  .btn {
  display: inline-block;
  font-weight: 400;
  color: #212529;
  text-align: center;
  vertical-align: middle;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  background-color: transparent;
  border: 1px solid transparent;
  padding: 0.375rem 0.75rem;
  font-size: 1rem;
  line-height: 1.5;
  border-radius: 0.25rem;
  transition: color 0.15s ease-in-out,
  background-color 0.15s ease-in-out,
  border-color 0.15s ease-in-out,
  box-shadow 0.15s ease-in-out;
}
.btn:hover {
  color: #212529;
  text-decoration: none;
}

and this is for .btn-primary :

.btn-primary {
  color: #fff;
  background-color: #007bff;
  border-color: #007bff;
}
.btn-primary:hover {
  color: #fff;
  background-color: #0069d9;
  border-color: #0062cc;
}
.btn-primary:focus {
  box-shadow: 0 0 0 0.2rem rgba(38, 143, 255, 0.5);
}
.btn-primary:not(:disabled):not(.disabled):active {
  color: #fff;
  background-color: #0062cc;
  border-color: #005cbf;
}
.btn-primary:not(:disabled):not(.disabled):active:focuss {
  box-shadow: 0 0 0 0.2rem rgba(38, 143, 255, 0.5);
}

and this is for input type="button" and input element:

[type="button"]:not(:disabled),
button:not(:disabled) {
  cursor: pointer;
}

[type="button"] button {
  -webkit-appearance: button;
}
input {
  margin: 0;
  font-family: inherit;
}

this button is exactly like bootstrap button even if you don't use Bootstrap.