body
{
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.tennam {
    text-align: center;
    font-size: 150%;
    line-height: 120%;
    font-weight: bold;
    color: #000000;
}

.thang {
    font-size: 9pt;
    line-height: 100%;
}

.tenthang {
    text-align: center;
    font-size: 125%;
    line-height: 100%;
    font-weight: bold;
    background-color: burlywood;
}

.navi-l {
    text-align: center;
    font-size: 100%;
    line-height: 100%;
    font-weight: bold;
    color: red;
}

.navi-r {
    text-align: center;
    font-size: 100%;
    line-height: 100%;
    font-weight: bold;
    color: #330033;
}

.ngaytuan {
    width: 14%;
    text-align: center;
    font-size: 125%;
    line-height: 100%;
    color: #330033;
    background-color: antiquewhite;
}

.ngaythang {
    
}

.ngaythang:hover{
    cursor: pointer;
    background-color: rgb(173, 235, 255);
}

.other-month {
    opacity: 0.4;
}

.other-month:hover {
    opacity: 0.6;
}

.homnay {}

.tet {}

.am {
    text-align: right;
    font-size: 75%;
    line-height: 100%;
    color: blue;
    margin-right: 3px;
}

.am2 {
    text-align: right;
    font-size: 75%;
    line-height: 100%;
    color: #004080
}

.t2t6 {
    text-align: left;
    font-size: 125%;
    color: black
}

.t7 {
    text-align: left;
    font-size: 125%;
    line-height: 100%;
    color: green
}

.cn {
    text-align: left;
    font-size: 125%;
    line-height: 100%;
    color: red
}

.date_ngaythang {
    margin: 0px 5px;
}

.header-content {
margin: 0 auto;
    display: grid;
    grid-template-columns: 0.3fr 1fr 0.3fr;
    max-width: 800px;
    width: 100%;
    justify-content: center;
    align-items: center;
    justify-items: center;
}

.header
{
    width: 100%;
    height: 45px;
    position: sticky;
    top: 0;
    background-color: #efefef;
}

.container {
    margin: 10px auto;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 20px;
    max-width: 1000px;
    width: 100%;
}

.column {
    margin: 0 auto;
}

.footer
{
    margin-top: 10px;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* CSS - https: //getcssscan.com/css-buttons-examples*/
.button-22 {
    align-items: center;
    appearance: button;
    text-decoration: none;
    background-color: #0276FF;
    border-radius: 8px;
    border-style: none;
    box-shadow: rgba(255, 255, 255, 0.26) 0 1px 2px inset;
    box-sizing: border-box;
    color: #fff;
    cursor: pointer;
    display: flex;
    flex-direction: row;
    flex-shrink: 0;
    font-family: "RM Neue", sans-serif;
    font-size: 75%;
    line-height: 1.15;
    margin: 5px;
    padding: 10px 21px;
    text-align: center;
    text-transform: none;
    transition: color .13s ease-in-out, background .13s ease-in-out, opacity .13s ease-in-out, box-shadow .13s ease-in-out;
    user-select: none;
    -webkit-user-select: none;
    touch-action: manipulation;
}

.button-22:active {
    background-color: #006AE8;
}

.button-22:hover {
    background-color: #1C84FF;
}


@media (max-width: 768px) {
    .tennam{
        font-size: 100%;
    }
    .container {
        flex-direction: column;
        /* For Flexbox */
        /* OR */
        grid-template-columns: 1fr;
        /* For CSS Grid */
    }

    .footer{
        flex-direction: column;
    }
}