.navbar-main, header {
    background-color: #9cf;
}

header h1 {
    font-size: 1.4em;
    line-height: 1.6em;
    text-align: center;
    font-weight: bold;
    padding: .45em 0;
}

pre {
    margin: .5em 0;
}

.navbar-nav .nav-link.active {
    font-weight: bold;
}

.page-header {
    margin: 0;
    margin-top: 1em;
    position: relative;
}

.page-header .headline {
    font-size: 2.4em;
    margin: 0;
    margin-top: .3em;
    font-weight: bold;
}

.page-header .subtext {
    font-size: 1.7em;
    margin: 0;
    margin-bottom: 1em;
    font-weight: bold;
}

.spline {
    color: red;
}

h1 {
    margin-top: .5em;
}

.homepage-features {
    margin-top: 1em;
}

.homepage-features .card {
    height: 100%;
}

.header {
    background: #fff0d0;
    padding: .2em 1em;
    margin: 1em 0;
}

img.disabled {
    filter: grayscale(.6);
}

.lang-selector {
    position: absolute;
    right: 10px;
}

.lang-selector .lang {
    display: none;
}

.lang-selector .dropdown-menu .lang {
    display: inline;
}