custom.css

.row {
    display: flex; /* equal height of children */
}

.container .row {
    padding: 5px;
}

.row .col {
    padding: 0px;
    margin: 5px;
}

.modify_row {
    background-color: #a8ffb9;
}

.row_form {
    padding: 20px;
}

.column {
    padding: 5px;
    flex: 1;
    background-color: #f9f9f9;
}

.bgAdjust {
    margin-left: 30px;
    margin-right: 30px;
    padding: 20px;
    border-color: black;
    border-style: solid;
    border-width: 3px;
}

input[type=text] , input[type=password] {
    height: 50px;
    width: 60%;
    font-size: 19px;
    padding: 5px;
}

input[type=radio] {
    width: 20px;
    height: 20px;
}

input[type=date] {
    height: 50px;
    width: 300px;
}

.row .column button {
    font-size: 19px;
    height: 50px;
    width: 300px;
}

.buttonAdjust {
    text-align: center;
    padding: 0px;
}

.incorrect {
    color: red;
    font-size: 20px;
}

table {
    background-color: #f9f9f9;
    width: 95%;
    font-size: 22px;
}

table , tr , th , td {
    border-style: solid;
    border-color: #cccccc;
    border-width: 2px;
    text-align: center;
    font-weight: bold;
}

td input {
    padding: 0px;
}

#prompt {
    text-align: center;
    background-color: #dddbdb;
    margin-left: 30%;
    margin-right: 30%;
}

#addRemind_form {
    text-align: center;
    margin: auto;
    width: 90%;
}

#input_subject , #input_remark {
    height: 150px;
    width: 100%;
    font-size: 21px;
}

.modify_input {
    width: 60px;
    height: 20px;
}