.cm {
font-size: 18px !important;
}
@media (min-width: 979px) {
    header .navbar-collapse {
        display: block;
        background-color: #f2f2f2;
        width: 100vw;
        margin-left: -50vw !important;
        left: 50%;
        position: relative;
        background-color: #f2f2f2;
        padding-top: 10px;
    }
    header .navbar-collapse ul {
        justify-content: center;
    }
}