.w-90 {width:90%;}
.w-80 {width:80%;}
.float-left {float:left;}
.float-right {float:right;}
.mr-25{margin-right: 25%;}
.nav-item:not(:last-child){margin-right:1rem;}
header .navbar .nav-link{font-size: 17px;}
.sidebar-wrapper ul li a {color:#FFF !important;text-decoration: none; padding:2px;}

.popup {
            display: none;
            position: relative;
            top: 30%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 90%;
            padding: 20px;
            background: #ffffff;
            border: 1px solid #ccc;
            box-shadow: 0 0 10px rgba(0,0,0,0.3);
            z-index: 1000;
        }

        .overlay {
            display: none;
            position: fixed;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            background: rgba(0,0,0,0.5);
            z-index: 999;
        }

        .close-btn {
            float: right;
            cursor: pointer;
            color: red;
            font-size: 18px;
        }