/* Khung đỏ viền đỏ|khung-do-vien-do|block */
.khung-do-vien-do {
    display:block;margin: 20px 0px; padding: 5px; outline: none; font-size: 12pt; font-family: Arial; color: #000000; box-sizing: border-box; border-radius: 15px; -webkit-font-smoothing: antialiased; line-height: 18pt; border: 1px solid #c366a8; background: #fff4fc;
}
/* khung-xanh-vien-xanh|Khung xanh viền xanh|block */
.khung-xanh-vien-xanh{display:block;margin: 20px 0px; padding: 10px; outline: 1px; font-size: 12pt; font-family: Arial; box-sizing: border-box; -webkit-font-smoothing: antialiased; color: #000000; line-height: 18pt; border: 2px solid #0b71d1; border-radius: 10px; background: #e5f7fc;}
/* khung-trich-dan|Khung trích dẫn|block */
.khung-trich-dan{display:block;background: #e6f5f2;
    border: 1px solid #d7d7d7;
    border-left: 5px solid #2ea4a6;
    margin: 0;
    padding: 0 20px;
    border-radius: 5px;}