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

body{
    background: lightskyblue;
}

h1, p, ul{
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: row;
    margin: 50px;
}

li{
    margin-top: 50px;
    list-style: none;
    text-align: center;
    width: 100px;
    height: 100px;
    border: 1px solid black;
    border-radius: 15px;
    background-color: aqua;
}