html - Removing space between h1 and h2

Question

I have stumbled across a problem that I can not seem to solve in any way, maybe I am using divs in a wrong way?

.greeting h1 {
  font-family: 'Raleway', sans-serif;
  font-weight: lighter;
  font-size: 100px;
  text-align: center
}
.greeting h2 {
  font-family: 'Raleway', sans-serif;
  font-weight: lighter;
  font-size: 35px;
  line-height: 0px;
  text-align: center
}

<div class="greeting">
  <h1>Hi.</h1>
  <h2>Select a group</h2>
</div>

Answer 1

headings h1 to h6 have margin by default, so you need to reset it, setting: margin:0.

.greeting h1 {
  font-family: 'Raleway', sans-serif;
  font-weight: lighter;
  font-size: 100px;
  text-align: center;
  margin: 0
}
.greeting h2 {
  font-family: 'Raleway', sans-serif;
  font-weight: lighter;
  font-size: 35px;
  text-align: center;
  margin: 0
}

<div class="greeting">
  <h1>Hi.</h1>
  <h2>Select a group</h2>
</div>