How to move placeholder to top on focus AND while typing?

You could do it like this

HTML:

<div>
  <input type="text" class="inputText" />
  <span class="floating-label">Your email address</span>
</div>

CSS:

input:focus ~ .floating-label,
input:not(:focus):valid ~ .floating-label{
  top: 8px;
  bottom: 10px;
  left: 20px;
  font-size: 11px;
  opacity: 1;
}

.inputText {
  font-size: 14px;
  width: 200px;
  height: 35px;
}

.floating-label {
  position: absolute;
  pointer-events: none;
  left: 20px;
  top: 18px;
  transition: 0.2s ease all;
}

Working JSFiddle here https://jsfiddle.net/273ntk5s/2/


.user-input-wrp {
	position: relative;
	width: 50%;
}
.user-input-wrp .inputText{
	width: 100%;
	outline: none;
	border:none;
	border-bottom: 1px solid #777;
 	box-shadow: none !important;
}
.user-input-wrp .inputText:focus{
	border-color: blue;
	border-width: medium medium 2px;
}
.user-input-wrp .floating-label {
	position: absolute;
	pointer-events: none;
	top: 18px;
	left: 10px;
	transition: 0.2s ease all;
}
.user-input-wrp input:focus ~ .floating-label,
.user-input-wrp input:not(:focus):valid ~ .floating-label{
	top: 0px;
	left: 10px;
	font-size: 13px;
	opacity: 1;
}
<h1>The floating label</h1>
<div class="user-input-wrp">
  <br/>
  <input type="text" class="inputText" required/>
  <span class="floating-label">Your email address</span>
</div>

Modified the code from @user1846747 a little.