@media (min-width: 570px){
    .openbtn, .closebtn {
        display: none;
    }
}
@media (max-width: 570px){  
                        /* header */
    #header-nav{
        width: 110%;
        background: rgba(0,0,0,0.9);
        height: 100vh;
        display: none;
    }
    #header-navbar-list {
        position: relative;
        flex-direction: column;
        top: -3em;
        text-align: center;
    }
    #header-navbar-list li {
        padding-bottom: 8em;
    }
    #header{
        margin: 0;
        padding: 0;
        position: relative;
        transition: 0.5s;
        overflow-x: hidden;
    }
    #header-navbar {
        top: 0;
        max-width: 100%;
        display: inherit;
    }
    #logo-img {
        width: 15%;
        margin-top: 3%;
    }
                            /* banner */
    #banner{
        min-height: 300px;
    }
    #banner-text {
        margin: 25% 0 0 30%;
    }
    #banner-text h2 {
        display: block;
    }
    #banner-text h1 {
        display: none;
    }
    #boxes{
        margin: 0;
        flex-wrap: wrap;
    }
    #box{
        width: 45%;
        margin: -5% 0% 5% 3%;
    }
    #divider-wrapper {
        padding: 0;
        padding-bottom: 10px;
    }
    .divider-three {
        display: none;
    }
                        /* About */
    #about {
        width: 80%;
        margin: 4% 0 0 10%;
    }
    #about-section {
        flex-direction: column;
        flex-wrap: wrap;
        height: 35em;
        padding: 10px;
    }
    #logo-pic {
        width: 100%;
        padding: 0;
    }
                        /* Form */
    #form {
        flex-direction: column;
        padding-left: 8%;
    }
    #form-left {
        width: 95%;
    }
    #contact .form-control {
        width: 100%;
    }
    #form textarea {
        width: 90%;
    }
    .btn-submit {
        margin-left: 35%;
    }
                            /* contact */
    .contact-info {
        justify-content: space-between;
        align-items: center;
        padding: 20px 20px 0 20px;
    }
    .myDetails{
        margin-right: 30px;
    }
    .footer {
        margin: 50px 10% 25px 10%;
    }

    /* Vertical */
    .topic {
        padding-top: 20%;
    }
}