.other { 
  display: flex; 
  align-items: center; 
  justify-content: center; 
  color: white;
  background: red;
} 
div {
    font-family: Sans-sarif;
    font-size: 30px;
    padding: 15px;
    position: absolute;
    top: 50%;
    left: 50%;
    -ms-transform: translateX(-50%) translateY(-50%);
    -webkit-transform: translate(-50%,-50%);
    transform: translate(-50%,-50%);
  }  
.centerDiv{
    width: 800px;
    border-radius: 5px;
    background: #ccc;
    padding: 10px;
    height: 50px;
    position: absolute;
    margin-top: -25px;
    margin-left: -400px;
    top: 50%;
    left: 50%;
  }