.tbrightcontent {
    position: fixed;
    left: 15%;
    width: 70%;
    height: 70%;
    right: 50%;
}

nav.main_menu ul li {
    display: inline-block;
    float: left;
    padding: 0;
    margin: -2px;
    background-repeat: no-repeat;
    background-position: right;
}

.xt-visible-mobile{
    display: none;
}
.xt-visible-desktop{
    display: block;
}
@media only screen and (max-width: 767px) {
.xt-visible-mobile{
    display:block;
}
.xt-visible-desktop{
    display: none;
}