.formulario {
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translate(-50%, 20%);
    width: 300px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 10px rgb(0 0 0 / 90%);
}

.formulario h1 {
    text-align: center;
    padding: 0 0 20px 0;
    border-bottom: 1px solid silver;
}

.formulario form {
    padding: 0 40px;
    box-sizing: border-box;
}


.formulario_registro {
    position: absolute;
    top: 0%;
    left: 50%;
    transform: translate(-50%, 0%);
    width: 90%;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 10px rgb(0 0 0 / 90%);
}

.formulario_registro h1 {
    text-align: center;
    padding: 0 0 20px 0;
    border-bottom: 1px solid silver;
}

.formulario_registro form {
    padding: 0 40px;
    box-sizing: border-box;
}

.form-row {
    width: 450px;
}

form .username {
    position: relative;
    border-bottom: 2px solid #adadad;
    margin: 20px 0;
}

.username input {
    max-width: 250px;
    width: 100%;
    padding: 0 5px;
    height: 25px;
    font-size: 12px;
    border: none;
    background: none;
    outline: none;
}

.username label {
    position: absolute;
    top: -20px;
    left: 5px;
    color: #555555;
    font-size: 16px;
    pointer-events: none;
}

.username span::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 0;
    width: 100%;
    height: 2px;
    background: rgb(0, 42, 255);
    transition: .5s;
}

.username input:focus~label,
.username input:focus~label {
    top: -20px;
    color: rgb(0, 42, 255);

}

.username input:focus~span::before,
.username input:focus~span::before {
    width: 100%;
    max-width: 250px;
}

form .contrasena {
    position: relative;
    border-bottom: 2px solid #adadad;
    margin: 20px 0;
}

.contrasena input {
    width: 100%;
    max-width: 250px;
    padding: 0 5px;
    height: 25px;
    font-size: 12px;
    border: none;
    background: none;
    outline: none;
}

.contrasena label {
    position: absolute;
    top: -20px;
    left: 5px;
    color: #555555;
    font-size: 16px;
    pointer-events: none;
}

.contrasena span::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 0;
    width: 100%;
    height: 2px;
    background: rgb(0, 42, 255);
    transition: .5s;
}

.contrasena input:focus~label,
.contrasena input:focus~label {
    top: -20px;
    color: rgb(0, 42, 255);

}

.contrasena input:focus~span::before,
.contrasena input:focus~span::before {
    width: 100%;
    max-width: 250px;
}

.recordar {
    margin: -5px 0 20px 5px;
    color: #1100ff;
    cursor: pointer;
}

.recordar {
    text-decoration: underline;
}


.registrarse {
    margin: 30px 0;
    text-align: center;
    font-size: 16px;
    color: black;
    font-weight: bold;
    text-decoration: underline;
}

.color_texto_blanco {
    text-decoration-color: #fff;
    color: #fff;
    text-decoration: none;
}