body {
    background-size: 100% 100%;
    background-attachment: fixed;
    background-position: center;
    background-image: url(/images/bg/3.jpg);
}

.bgo {
    //background: white;
    background-image: url(/images/bgo.png);
    background-repeat: repeat;
    //opacity: 0.8;
}

@media (min-width: 576px) {
.bgo {
    border: 1px solid rgb(0,0,0,.2);
    border-radius: 10px;
    -webkit-box-shadow: 1px 4px 15px 1px rgba(0,0,0,0.6);
    box-shadow: 1px 4px 15px 1px rgba(0,0,0,0.6);
}
    }

.btn-vln {
    background-image: linear-gradient(to right, #314755 0%, #26a0da  51%, #314755  100%);
    margin: 10px;
    padding: 15px 45px;
    text-align: center;
    text-transform: uppercase;
    transition: 0.5s;
    background-size: 200% auto;
    color: white;
    -webkit-box-shadow: 0px 5px 7px -5px #314755, 0px 6px 15px 8px rgba(49,71,85,0.3);
    box-shadow: 0px 5px 7px -5px #314755, 0px 6px 15px 8px rgba(49,71,85,0.3);
    border-radius: 10px;
    display: inline-block;
    width: 300px;
}

.btn-vln:hover {
    background-position: right center; /* change the direction of the change here */
    color: #fff;
    text-decoration: none;
}