How do I change the padding of the text in a Select2 box

I have been able to change the height of a select2 box and also apply some few changes but my problem now is the text in the select2 box appears at the center of the select box and also at the top of the arrow down. I just do not know why?

View image here:

.select2-container--bootstrap .select2-selection {
  -webkit-box-shadow: 0;
  box-shadow: 0;
  background-color: #fff;
  border: 0;
  border-radius: 0;
  color: #555555;
  font-size: 14px;
  outline: 0;
  min-height: 48px;
}