#grid-container{
? ?width: 480px;
? ?height: 480px;
? ?padding: 10px;
? ?margin: 0 auto;
? ?background-color: #8B008B;
? ?border-radius: 10px;
? ?display: flex;
? ?flex-wrap: wrap;
? ?align-items: center;
? ?justify-content: center;
}
.grid-cell{
? ?width: 100px;
? ?height: 100px;
? ?border: 1px solid red;
? ?margin: 5px;
}