.custom-block {
    border-radius: 15px;
    padding: 20px;
    text-align: center;
    margin-bottom: 20px;
}

.custom-block img {
    max-width: 100%;
    height: auto;
    margin-bottom: 15px;
}

.col-md-4:nth-child(1) .custom-block {
    background-color: #FFEFE2;
}

.col-md-4:nth-child(2) .custom-block {
    background-color: #E8F3FF;
}

.col-md-4:nth-child(3) .custom-block {
    background-color: #F8E8FF;
}