*, *::before, *::after {
  box-sizing: border-box;
}

 .cf::before,
 .cf::after  {
    content: "";
    display: block; 
  }
  .cf::after {
  clear: both;  
  }
  .cf {
  zoom: 1; /* for old ie (trigger has layout) */  
  }

h2 {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 50%;
  text-align: center;

}
.center  {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 50%;
}

#meeting {
  margin-top: 100px;
}