body {
    background: #000;
    margin: auto;
    text-align: center;
    color: #fff;
    font-family: sans-serif;
}
.post-password-form {
    top: 50%;
    display: block;
    position: absolute;
    margin: 0 auto;
    width: 50%;
    transform: translate(50%, -50%);
}
p {
    margin-bottom: 50px;
}
label input{
    height: 35px;
    margin-left: 10px;
}
input {
    border-radius: 0;
    border: none;
    padding: 10px 20px;
    margin-left: 30px;
}