body {
  margin: 0;
  padding: 0;
  background:url(../img/bbj.jpg) no-repeat center / cover;
  background-size:cover;
  /*background-color: pink;*/
  font-family: helvetica, arial, sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  width: 100vw;
}