.myrows {
    border: 3px solid green;
    padding: 5px;
}

.mycols {
    border: 3px solid red;
}

.mycontainer {
    background-color: aqua;
}

#topHeader {
    border-bottom: 1px solid #ebebeb;
}

    #topHeader a {
        color: #2c3e50;
        font-weight: 600;
        font-size: 0.89rem;
    }

.container-fluid {
    padding-left: 0;
    padding-right: 0;
}

nav ul li a {
    font-size: 1.1rem;
    font-weight: 600;
}

.dropdown-menu li {
    position:relative;
}

.dropdown-menu .submenu {
    display:none;
    position:absolute;
    left:100%;
    top:-7px;
}

.dropdown-menu>li:hover>.submenu{
    display:block;
}

.carousel .carousel-item {
    height: 500px;
}

.carousel-item img {
    position: absolute;
    object-fit: cover;
    top: 0;
    left: 0;
    min-height: 500px;
}