body {
    font-family: 'SolaimanLipi', sans-serif;
    background-color: #f8f9fa;
}
.navbar-brand {
    font-weight: bold;
    font-size: 20px;
}
.card h5 {
    font-weight: bold;
}
.dropdown-submenu {
    position: relative; 
    z-index: 10;
}
.dropdown-submenu>.dropdown-menu {
    top: 0;
    left: 100%;
    margin-left:0.1rem;
    margin-right:0.1rem;
}