.container 
{
  height: 200px;
  position: relative;
}

.center 
{
  margin: 0;
  position: absolute;
  top: 50%;
  left: 50%;
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
}

.buttonLarge 
{
  width: 100%; 
  height: 100%; 
}

.textLarge
{
 font-size: 45px; 
}