.ant-steps {
  max-width: 750px;
  margin: 16px auto;
}

app-step-form {
    [nz-form] {
        margin: 40px auto 0;
        max-width: 500px;
    }
}

app-step3 {
    display: block;
    text-align: center;
    width: 72%;
    max-width: 560px;
    margin: 0 auto;
}

.extra {
    background: #fafafa;
    padding: 24px 40px;
    border-radius: 2px;
    text-align: left;
}