*{
    margin: 0;
    padding: 0;
}
body{
    width: 100%;
    height: 100%;
    background: #00c4ff;
}
.contenedor{
    width: 50%;
    height: 400px;
    margin: auto;
    margin-top: 10%;
    background: #ffffff;
    border-radius: 20px;
}
h2{
    text-align: center;
    color: red;
    font-family: cursive;
    padding-top: 5%;
}
form{
    display: flex;
    flex-direction: column;
    align-items: center;
}
.btn{
    width: 80%;
    height: 30px;
    margin-top: 5%;
    border-radius: 15px;
}
::placeholder{
    padding-left: 10%;
    color: red;
}
.btn_enviar{
    margin-top: 5%;
    width: 50%;
    height: 30px;
    border-radius: 15px;
    background: #ff0;
}
.error{
    width: 80%;
    height: 30px;
    margin-top: 5%;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
}
.error p{
    text-align: center;
    color: purple;
    font-size: 18px;
    font-family: sans-serif;
}