body {

  background-image: url("../images/bg1.gif");

  /* background-repeat: repeat; */
  background-size: 100%;
}

.gif {
  width: 100%;
  height: auto;
}

h1 {
  padding: 10px;
}

.header {
  border: 4px solid black;
  display: grid;
  grid-template-columns: auto repeat(3, 100px);
  grid-template-rows: 50px;
  grid-gap: 10px;
}

.title {
  text-align: center;
  font-size: 300%;
  color: aliceblue;
}