SetTimeout not working in angular

1 
this.Auth.getUserDetails(firstname, lastname,contact,emailid,adminemail,pwd)
    .subscribe((response) =>{
      console.log(response);
      if(response.success===1){
        console.log(response);
        setTimeout (()=>{ 
          document.getElementById('form-content').innerHTML='<p style="font-family: \'Montserrat\', sans-serif; font-size: x-large;color: blanchedalmond;padding-left: 350px;">You have been succesfully registered.</p>';
        },
        3000);
        // localStorage.setItem('jwt_token',JSON.stringify(response));
      }else{
        alert('invalid user');
      }
    })

My settimeout function is displaying the html set in the above function, but it is not going out. It becomes fixed.

Thanks in advance

2

I’m not sure what you mean by that.

3

I actually it shouldn’t display after 3 sec. Right!!
But it becomes fixed.

4

What do you mean “It becomes fixed”?