body {
 background-color: white; 
 font-family: Arial, sans-serif; 
 }

.row {
    margin-bottom: 15px;
    background-color: #FFFFFF;
    align-content: center;
}

.row [class^="col-"] {
    padding-top: 1px;
    padding-bottom: 1px;
    padding-left: 1px;
    padding-right: 1px;
    margin-bottom: 1px;
    background-color: #FFFFFF;
    border: 1px solid #ddd;
}