.first{
    display: flex;
    flex-direction: column;
    height: 100vh;
    justify-content: center;
    align-items: center;
}

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body{
    background-color: gold;
}

h1{
    margin-bottom: 3em;
}