form {
    max-width: 770px;
    margin: 50px auto auto;
    padding: 50px;
    background-color: #fff;
    font-family: arial;
    font-size: 18px;
}

label {
    width: 100%;
    margin-bottom: 0px;
    display: block;
}

input {
    width: 100%;
    height: 30px;
    margin-bottom: 20px;
    border: solid 1px #bfa7a7;
    border-radius: 3px;
}

input[type='submit'] {
    height: 50px;
    font-size: 18px;
    text-transform: uppercase;
    margin-top: 15px;
}

.mensagemErro {
    color: red;
    font-size: 12px;
}