.grid {
    display: flex;
    flex-wrap: wrap;
    height: 300px;
    width: 400px;
    margin: auto;
}


h1 {
    font-size: 100px;
    text-align: center;
}

h3 {
    font-size: 50px;
    text-align: center;
    border: 5px solid;
}