.menu_simple_items {
    margin-top: 40px;
}

.menu_simple_items nav{
    opacity: 1;
    display: flex;
    flex-direction: column;
}



.menu_simple_items nav a {
    display: inline-flex;
    color: #000;
    font-size: 16px;
    font-style: normal;
    font-weight: 500;
    line-height: normal;
    letter-spacing: 0.16px;
    text-transform: uppercase;
    margin-bottom: 15px;
    position: relative;
}

.menu_simple_items nav a:hover {
    text-decoration: none;
}


.menu_simple_items nav a:after {
    background-color: #000;
    bottom: 0;
    content: "";
    height: 1px;
    position: absolute;
    right: 0;
    transition: width .3s linear;
    width: 0;
}

.menu_simple_items nav a:hover:after {
    left: 0;
    right: auto;
    width: 100%;
}