body {
    background-color: green;
    box-sizing: border-box;
    margin: 0;
}

header {
    display: flex;
    flex-direction: column;
    text-align: center;
    color: white;
    margin-top: 50px;
}

#change-due {
    width: 168px;
    margin: auto auto;
    color: white;
}

#input-parent {
    display: flex;
    flex-direction: column;
    /* if flex-direction is used then the content cetering is reversed in this case align-items: center since flex-directioin is in column*/
    align-items: center;
    margin-top: 12px;
}

#input-label {
    color: white;
}

#cash {
    width: 220px;
    height: 25px;
    margin: 12px 0 0 0;
    border-radius: 8px;
    padding-left: 8px;
}

#purchase-btn {
    background-color: rgb(255, 187, 0);
    border-radius: 6px;
    padding: 4px 15px 4px 15px;
    font-weight: bold;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 10px auto;
}

#purchase-btn:hover {
    background-color: rgb(194, 148, 23);
    cursor: pointer;
}

.price,
.sumCid {
    margin: auto auto;
    text-align: center;
    align-content: center;
    background-color: black;
    border: 7px solid rgb(137, 238, 21);
    width: 180px;
    height: 25px;
    color: white;
}

.littleRec {
    /* shifting the element from its normal poistion */
    position: relative;
    left: -40px;
    background-color: rgb(137, 238, 21);
    width: 35px;
    height: 35px;
    margin: auto auto;
}

#cashDraw {
    position: relative;
    top: -22px;
    width: 260px;
    height: 200px;
    background-color: rgb(137, 238, 21);
    margin: auto auto;
    border-radius: 25px 25px 0 0;
    color: black;
}

ul {
    position: relative;
    top: 8px;
    font-size: 13px;
    background-color: rgb(211, 207, 207);
    width: 40%;
    height: 180px;
    margin-left: 40%;
    padding-bottom: 5px;
    color: rgb(20, 20, 19);
    display: flex;
    flex-direction: column;
    /* vertically centering since flex-direction is used  */
    justify-content: center;
}

#CID-title {
    position: relative;
    font-size: 12px;
    top: 0px;
}

ul li {
    position: relative;
    left: -30px;
}

.bottomRec {
    position: relative;
    top: -16px;
    width: 260px;
    height: 40px;
    background-color: rgb(137, 238, 21);
    margin: auto auto;
    /* perfect centering of its content  */
    display: flex;
    justify-content: center;
    align-items: center;
}

#print {
    background-color: rgb(66, 66, 66);
    color: white;
    font-size: 15px;
    border-radius: 8px;
    padding: 4px 12px;
    width: 90px;
    cursor: pointer;
}

#print:hover {
    background-color: rgb(46, 45, 45);
}

#author {
    color: white;
    text-align: center;
}

em {
    color: yellow;
}