html, body{
    background-color:powderblue;
    align-items:center;
    align-content:center;
    height:100%;
    margin:0;
}

body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

h1{
    color:white;
    font-size:70px;
    background-color:black;
}
h3{
    color:white;
    background-color:black;
    font-size:25px;
}