.footer_box{
  text-align:center;
  margin-bottom: 5px;
  color:#fff;
  font-family:Helvetica;
}

.footer_box button{
  font-size:15px;
  color:#fff;
  background:rgba(0,0,0,0);
  margin-right: 20px;
  margin-left: 20px;
  border: 0px;
  outline:none;
}
.footer_box button:hover{
  background:rgba(0,0,0,0.13);
}