.navbar-button-icon {
    background: #090d48;
    width: 30px;
    display: block;
    height: 2px;
    position: relative;
}
    .navbar-button-icon.secondary {
        background: white;
    }

    .navbar-button-icon::after {
        content: "";
        display: block;
        background: #090d48;
        position: absolute;
        width: 100%;
        height: 100%;
        top: 7px
    }
    .navbar-button-icon.secondary::after {
        background: white;
    }

    .navbar-button-icon::before {
        content: "";
        display: block;
        background: #090d48;
        position: absolute;
        width: 100%;
        height: 100%;
        top: -7px
    }
    .navbar-button-icon.secondary::before {
        background: white;
    }