
    <form nz-form [nzLayout]="'inline'" [formGroup]="validateForm" (ngSubmit)="submitForm()">
      <nz-form-item>
        <nz-form-control nzErrorTip="Please input your username!">
          <nz-input-group nzPrefixIcon="user">
            <input formControlName="username" nz-input placeholder="username" />
          </nz-input-group>
        </nz-form-control>
      </nz-form-item>
      <nz-form-item>
        <nz-form-control nzErrorTip="Please input your Password!">
          <nz-input-group nzPrefixIcon="lock">
            <input formControlName="password" nz-input type="password" placeholder="Password" />
          </nz-input-group>
        </nz-form-control>
      </nz-form-item>
      <nz-form-item>
        <nz-form-control>
          <button nz-button nzType="primary" [disabled]="!validateForm.valid">Log in</button>
        </nz-form-control>
      </nz-form-item>
    </form>
  