How to do floating of labels in CSS

Question

I want to display the label of an input inside its input, so that when I click the input, the label will animate and go above the input and change the styles of the input\'s bor

Answer 1

.box {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 200px;
  background: #fff;
  padding: 40px;
  border: 1px solid red;
  box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
}

.box input {
  padding: 10px 0;
  margin-bottom: 30px;
}

.box input {
  width: 100%;
  box-sizing: border-box;
  box-shadow: none;
  outline: none;
  border: none;
  border-bottom: 2px solid #999;
}

.box form div {
  position: relative;
}

.box form div label {
  position: absolute;
  top: 10px;
  left: 0;
  color: #999;
  transition: 0.5s;
  pointer-events: none;
}

.box input:focus~label,
.box input:valid~label {
  top: -12px;
  left: 0;
  color: red;
}

.box input:focus,
.box input:valid {
  border-bottom: 2px solid red;
}

  

    

      
      First Name
    
    

      
      Last Name