Aspectos destacados de la entrada azul brillante | Programar Plus

Como Twitter a mediados de 2012.

input[type=text], textarea {
  -webkit-transition: all 0.30s ease-in-out;
  -moz-transition: all 0.30s ease-in-out;
  -ms-transition: all 0.30s ease-in-out;
  -o-transition: all 0.30s ease-in-out;
  outline: none;
  padding: 3px 0px 3px 3px;
  margin: 5px 1px 3px 0px;
  border: 1px solid #DDDDDD;
}
 
input[type=text]:focus, textarea:focus {
  box-shadow: 0 0 5px rgba(81, 203, 238, 1);
  padding: 3px 0px 3px 3px;
  margin: 5px 1px 3px 0px;
  border: 1px solid rgba(81, 203, 238, 1);
}

Vea las entradas de lápiz azul brillante de Chris Coyier (@chriscoyier) en CodePen