#maincontent {
    display: flex;
    height: 100vh;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
}

.cont {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    border-radius: 10px;
    border: 1px solid gray;
    box-shadow: 0 0 20px lightgray;
}