body {
    margin: 0;
}

.topnavDMM {
    overflow: visible;
    background-color: #333;
    height: 90px;
}

.topnavDMM img {
    padding: 0px 0px 5px 0px;
}

    .topnavDMM a {
        float: left;
        display: block;
        color: #f2f2f2;
        text-align: center;
        padding: 14px 16px;        
        text-decoration: none;
        font-size: 17px;
    }

        .topnavDMM a:hover {
            background-color: #2196F3;
            color: black;
        }

        .topnavDMM a.active {
            background-color: #4CAF50;
            color: white;
        }

    .topnavDMM ul li {
        display: inline;
    }

.dropdownDMM {
    float: left;
    overflow: visible;
}

    .dropdownDMM .dropbtn {
        cursor: pointer;
        font-size: 16px;
        border: none;
        outline: none;
        color: white;
        padding: 14px 16px;
        background-color: inherit;
    }

    .dropdownDMM:hover .dropbtn {
        background-color: red;
    }

.dropdownDMM-content {
    display: none;
    position: absolute;
    background-color: #f9f9f9;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    z-index: 1;
}

    .dropdownDMM-content a {
        float: none;
        color: black;
        padding: 12px 16px;
        text-decoration: none;
        display: block;
        text-align: left;
    }

        .dropdownDMM-content a:hover {
            background-color: #0078d7;
        }

.show {
    display: block;
}