main {
    margin: 3rem auto;
    max-width: 90vw;
    width: 50ch;
}

ul {
    padding: 0;
    list-style-type: none;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
}

li {
    height: 180px;
    width: 150px;
    border: rgba(42,196,230,0.705) 4px solid;
    color: #1a1a1a;
    font-size: 100px;
    margin: 0 1rem;
    min-width: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}