.hcmus-attendance{
    max-width:900px;
}

.attendance-card{

    border:1px solid #ddd;
    border-radius:10px;
    padding:15px;
    margin-bottom:20px;
    background:#fff;

}

.attendance-card h3{

    margin-top:0;
    color:#0073aa;

}

.attendance-card textarea{

    width:100%;
    min-height:70px;
    margin-top:10px;
    margin-bottom:10px;

}

.attendance-card select{

    width:200px;

}

.btn-save{

    background:#0073aa;
    color:#fff;
    border:0;
    padding:8px 16px;
    border-radius:5px;
    cursor:pointer;

}

.btn-save:hover{

    background:#005f8d;

}

.btn-save:disabled{

    opacity:.6;
    cursor:not-allowed;

}

.save-result{

    margin-left:10px;
    font-weight:bold;

}