.container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    text-align: center;
    margin: 40px;
}

.flex1, .flex2, .flex3, .flex4, .flex5,.flex6,.flex7,.flex8,.flex9,.flex10 {
    align-items: center;
    justify-content: center;
    background-color:  #F0F8FF;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    width: 300px;
    height: 300px;
    margin: 30px;
    text-align: center;

}