nav {
    background-color: #90caf9 !important;
}

html {
    background: url(../img/bg2.jpg) no-repeat center center fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;

}

html {
    height: 100%;
}
body {
    min-height: 100%;
}
.bg-light {
    background-color: rgba(248,249,250, 0.2) !important;
}

.bg-dark {
    background-color: rgba(52, 58, 64, 0.8) !important;
}

.alert {
    display: none;
}

img {
    max-width: 100%;
}