Floating labels in Bootstrap 4.1

While browsing Google, I came across a Bootstrap 4.1 doc example showcasing floating labels: getbootstrap.com/docs/4.1/examples/floating-labels/

Surprisingly, the example page does not provide any explanation on how to achieve this effect, and I couldn't find any reference to floating labels in the Bootstrap 4.1 documentation. Notably, floating labels are not mentioned as a new feature in the ship list either.

Is there someone who can confirm if floating labels are actually supported in Bootstrap 4.1?

cssuser-interfacelabelbootstrap-4

Answer №1

According to the Bootstrap examples page, the concept of floating-labels is described as...

"Experiments - Examples that focus on future-friendly features or techniques."

Similar to other examples on the page, this one also includes an additional CSS file...

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

By using the floating-labels.css, the labels function as intended in compatible web browsers...

Answer №2

My preferred method is to utilize transform translate as it provides a smoother effect. To avoid overriding Bootstrap's original classes, I have included additional classes.

body{padding:75px}
.form-group.floating>label {
    bottom: 34px;
    left: 8px;
    position: relative;
    background-color: white;
    padding: 0px 5px 0px 5px;
    font-size: 1.1em;
    transition: 0.1s;
    pointer-events: none;
    font-weight: 500 !important;
    transform-origin: bottom left;
}

.form-control.floating:focus~label{
    transform: translate(1px,-85%) scale(0.80);
    opacity: .8;
    color: #005ebf;
}

.form-control.floating:valid~label{
    transform-origin: bottom left;
    transform: translate(1px,-85%) scale(0.80);
    opacity: .8;
}
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet"/>


<div class="form-group floating">
<input type="text" class="form-control floating" id="usr" required value="">
<label for="usr">Username</label>
</div>

Answer №3

If you are seeking a floating label feature, check out this fantastic Bootstrap 4 theme:

Answer №4

The unique styles utilized on that specific example website

:root {
  --input-padding-x: .75rem;
  --input-padding-y: .75rem;
}

html,
body {
  height: 100%;
}

body {
  display: -ms-flexbox;
  display: -webkit-box;
  display: flex;
  -ms-flex-align: center;
  -ms-flex-pack: center;
  -webkit-box-align: center;
  align-items: center;
  -webkit-box-pack: center;
  justify-content: center;
  padding-top: 40px;
  padding-bottom: 40px;
  background-color: #f5f5f5;
}

.form-signin {
  width: 100%;
  max-width: 420px;
  padding: 15px;
  margin: 0 auto;
}

.form-label-group {
  position: relative;
  margin-bottom: 1rem;
}

.form-label-group > input,
.form-label-group > label {
  padding: var(--input-padding-y) var(--input-padding-x);
}

.form-label-group > label {
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  width: 100%;
  margin-bottom: 0; /* Override default `<label>` margin */
  line-height: 1.5;
  color: #495057;
  border: 1px solid transparent;
  border-radius: .25rem;
  transition: all .1s ease-in-out;
}

.form-label-group input::-webkit-input-placeholder {
  color: transparent;
}

.form-label-group input:-ms-input-placeholder {
  color: transparent;
}

.form-label-group input::-ms-input-placeholder {
  color: transparent;
}

.form-label-group input::-moz-placeholder {
  color: transparent;
}

.form-label-group input::placeholder {
  color: transparent;
}

.form-label-group input:not(:placeholder-shown) {
  padding-top: calc(var(--input-padding-y) + var(--input-padding-y) * (2 / 3));
  padding-bottom: calc(var(--input-padding-y) / 3);
}

.form-label-group input:not(:placeholder-shown) ~ label {
  padding-top: calc(var(--input-padding-y) / 3);
  padding-bottom: calc(var(--input-padding-y) / 3);
  font-size: 12px;
  color: #777;
}

Answer №6

Check out the SCSS version below, tailored to also cater for textarea elements while excluding styles incompatible with IE11, particularly those related to :placeholder-shown support.

:root {
  --input-padding-x: .75rem;
  --input-padding-y: .75rem;
}

.floating-label {
  $placeholderColour: $middleGrey;
  position: relative;

  input, textarea, label {
    padding: var(--input-padding-y) var(--input-padding-x);
  }

  label {
    position: absolute;
    top: 0;
    left: 0;
    display: block;
    margin-bottom: 0;
    line-height: 1.5;
    color: $placeholderColour;
    border: 1px solid transparent;
    border-radius: .25rem;
    transition: all .1s ease-in-out;

    &:hover {
      cursor: text;
    }
  }

  input::-webkit-input-placeholder {
    color: transparent;
  }

  input:-ms-input-placeholder {
    color: transparent;
  }

  // More code follows...

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