My NodeBB topic page looks like this.

The bottom post-bar is not good placed because I set the upper post-bar good but the post bar below does something strange.
I want to change it good or remove it. But if I use this code
.topic-main-buttons.pull-right {
display: none;
}
Both of them dissapear (see image below)

How can I change the CSS to make it good, or only display the postbar below first topic and remove the one from the bottom?
This is the CSS I use now.
.post-bar {
background-color: #1d1f21;
margin-left: -10px;
margin-top: -20px;
margin-right: -10px;
}
.topic-main-buttons.pull-right {
margin-top: 25px;
}
I use default Persona theme.
check page here.