body {
  margin: 0;
}

* {
  -webkit-box-sizing: border-box;
     -moz-box-sizing: border-box;
          box-sizing: border-box;
}

.logo {
	position: absolute;
  top:50%;
  left:50%;
  transform: translate(-50%,-50%);
  -moz-transform: translate(-50%,-50%);
  -webkit-transform: translate(-50%,-50%);
    
	
}

.logo img {
  width: 100%;
  max-width: 400px;
  padding:20px;
}