body{
  margin: 0;
}
.pageHead{
    width: 100%;
    height: 100%;
    font-size: 80px;
    text-align: center;
    vertical-align: middle;
    color:white;
}

#start_button{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    background-color: #f1f1f1;
    color: black;
    font-size: 44px;
    padding: 16px 30px;
    border: none;
    cursor: pointer;
    border-radius: 5px;
    text-align: center;
}

#start_button:hover{
    background-color: black;
    color: white;
}
.head{
  background-color: ivory;
  background-image: url(onMouse.png);
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  text-shadow: 0 2px dimgrey, 2px 0 black;
}
#grid{
  display: grid;
    grid-template-columns: 100px 100px 100px;
    grid-template-rows: 50px;
}
.item{
  display: flex;
}