html, body {
    min-height: 100vh;
}

body {
    background-color: #181a32;
}

header.header {
    position: relative;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    height: 200px;
}

header.header::after {
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: rgba(24, 26, 50, 0.4);
}

header.header .header-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("../img/header-bg.jpg");
    background-size: 100% 100%;
    background-repeat: no-repeat;
}

header.header .header-caption {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 40px 20px 20px;
    font-size: 16px;
    font-weight: 300;
    letter-spacing: 0.5px;
    z-index: 1;
    background: -moz-linear-gradient(to bottom, rgba(0, 0, 0, 0) 0, #181a32 100%);
    background: -webkit-linear-gradient(to bottom, rgba(0, 0, 0, 0) 0, #181a32 100%);
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0) 0, #181a32 100%);
}

main {
    padding: 30px 20px 30px;
}

footer {
    font-size: 12px;
}

.navbar-text {
    font-size: 20px;
    padding-top: 0.3rem;
    padding-bottom: 0.3rem;
    color: #000;
}

.was-validated .form-control:valid, .form-control.is-valid {
    border: 1px solid #ced4da;
    background-image: none;
}

.was-validated .form-control:valid:focus, .form-control.is-valid:focus {
    border-color: #86b7fe;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}