label, input{
    transition:0.3s;
}
.contenedor-inicio{
    border-radius: 5%;
    width: 50%;
    margin:auto;
    margin-top: 3%;
    text-align: center;
    box-shadow: 0.5rem 0.5rem 4rem rgba(0, 0, 0, 0.479);
    padding: 2rem;
    font-family: "Roboto", "Arial";
  background: rgba(255, 255, 255, 0.2); 
  backdrop-filter: blur(10px); 
  -webkit-backdrop-filter: blur(10px);
}
.contenedor-inicio img{
    width: 30%;
}
.contenedor-inicio h1{
    color: #1e3954;
    font-weight: 350;
}
.contenedor-inicio input[type="submit"]{
    border-radius: 0.5rem;
    width: 75%;
    font-family: "Montserrat", "Arial";
    font-size: 150%;
    padding:0.5rem;
    margin: 1rem;
    border: none;
    background-color:#2866a3 ;
    box-shadow: 0.1rem 0.1rem 0.5rem rgba(0, 0, 0, 0.479);
    transition: 0.5s;
    font-weight: 600;
    color:#ffffff;
}
.contenedor-inicio input[type="submit"]:hover{
    background-color:#1e3954 ;
    color:#ffffff;
}
.grupo {
  position: relative;
  margin: 25px auto;
  width: 75%;
}
.grupo input {
  width: 100%;
  padding: 12px 10px;
  font-size: 125%;
  font-family: "Roboto", "Arial";
  border: none;
  border-bottom: 2px solid #aaa;
  outline: none;
  background: transparent;
  transition: 0.3s;
  font-weight: 350;
}
.grupo input:focus {
  border-bottom-color: #2866a3;
}
.grupo label {
  position: absolute;
  left: 10px;
  top: 12px; 
  color: #777;
  pointer-events: none;
  transition: 0.3s;
  font-size: 125%;
  font-family: "Roboto", "Arial";
  font-weight: 350;
}
.grupo input:focus + label,
.grupo input:not(:placeholder-shown) + label {
  top: -8px;    
  font-size: 100%;
  color: #2866a3;
  font-weight: 400;
}
.exito {
  color: green;
  font-weight: bold;
  margin-top: 10px;
  padding: 5px;
  border: 1px solid green;
  background-color: #e6ffe6;
  border-radius: 5px;
}
.error {
  color: red;
  font-weight: bold;
  margin-top: 10px;
  padding: 5px;
  border: 1px solid red;
  background-color: #ffe6e6;
  border-radius: 5px;
}