* {
  box-sizing: border-box;
}

.formulario {
  width: 500px;
  max-width: 100%;
  margin: auto;
  margin-top: 30px;
  padding: 30px;
  border-radius:5px;
  box-shadow: 0 0 20px 1px rgba(0,0,0,0.3);
  position: relative;
}
.formulario__titulo {
  text-align: center;
  margin-top: 0;
  color: rgba(0,0,0,0.7);
}
.formulario__input, .formulario__label, .formulario__submit {
  display: block;
  width: 100%;
  font-size: 1.3em;
}
.formulario__input {
  padding: 10px;
  background: rgba(0,0,0,0.1);
  border: 1px solid rgba(0,0,0,0.3);
  margin-bottom: 25px;
}
.formulario__input:focus {
  outline: 1px solid rgba(0,0,0,0.7);
}

.formulario__input:focus + .formulario__label{
  margin-top: -95px;
}

.formulario__textarea {
  padding: 15px;
  background: rgba(0,0,0,0.1);
  border: 1px solid rgba(0,0,0,0.3);
  margin-bottom: -4px;
  width:100%;
  min-height:100px;
  max-height:150px;
  max-width:100%;
  min-width:85%;
}
.formulario__textarea:focus {
  outline: 1px solid rgba(0,0,0,0.7);
}

.formulario__textarea:focus + .formulario__label{
  margin-top: -125px;
}

.formulario__label {
  padding-left: 15px;
  position: absolute;
  margin-top: -60px;
  z-index: -20;
  color: rgba(0,0,0,0.5);
  transition: all 0.2s;
}
.formulario__submit {
  /*background: rgba(0,0,0,0.7);*/
  background-color:#060;
  color: white;
  padding: 10px 20px;
  cursor: pointer;
  border: none;
   margin-top: 10px;
}
.fijar {
  margin-top: -95px;
}