body {
    background: #e8e8e8;
    background-size: cover;
    height: 100%;
}

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

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