hello 

i use this code css here:

#wpforo #wpforo-wrap .wpforo-register-wrap .wpforo-register-content {
  margin-top: 2px;
  padding-bottom: 60px !important;
}
#wpforo #wpforo-wrap .wpf-field {
  border-bottom: 0 !important;
}
#wpforo #wpforo-wrap #nsl-custom-login-form-1 .nsl-container-embedded-login-layout-below {
  text-align: center;
  top: -60px;
  position: relative;
}
#wpforo #wpforo-wrap div.nsl-container .nsl-button {
  background: transparent !important;
}
#wpforo #wpforo-wrap div.nsl-container .nsl-button {
  margin-bottom: 5px !important;
}

by @tutrix 

and it give me written connect without skin button and some buttons also not appeared :