@keyframes waves {
    0% {
        background-position: 0 0
    }
    100% {
        background-position: 1920px 0
    }
}

.menu_wave {
    background-image: url(../img/main_menu_bg.png);
    background-repeat: repeat-x;
    animation: waves 10s ease-in-out infinite;
    background-color: transparent;
    height: 131px;
    z-index: 99;
}

.banners_costa_wave {
    margin: -55px 0 25px 0;
}

.header_costa {
    border-bottom: 0px solid #5884A4;
    background: #0d77bd;
}

.menu_wave .nav-pills ul li a{
    background: rgba(13, 119, 189, 0.9);
}