.navbar-toggler-icon::after {
    content: "\25BE";
    display: inline-block;
    margin-left: 4px;
}

.dropdown-menu::after {
    content: "";
    position: absolute;
    top: -10px;
    right: 10px;
    border-width: 0 8px 8px;
    border-style: solid;
    border-color: #fff transparent;
}

body {
    padding-top: 90px;
    display: flex;
    flex-direction: column;
    min-height: 100%;
    height: 100%;
}

footer {
    margin-top: auto;
    position: relative;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: #343a40;
    color: white;
    text-align: center;
    padding: 10px 0;
}


.navbar {
    padding: 0.5rem 1rem;
}

.header {
    position: relative;
    padding: 15rem;
    margin: 1rem;
    color: #ffffff;
    text-shadow: 2px 2px 4px #000000;
    font-size: 2em;
    background-color: rgba(0, 0, 0, 0.5);
}

.header::before {
    content: "";
    background: url('assets/background.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0.8;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    position: absolute;
    z-index: -1;   
}

html {
    scroll-behavior: smooth;
    height: 100%;
}

.container {
    padding-bottom: 2rem;
}

select {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="%23333" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M6 9l6 6 6-6"/></svg>');
    background-repeat: no-repeat;
    background-position-x: 95%;
    background-position-y: 50%;
    padding-right: 1.5rem;
}

select::-ms-expand {
    display: none;
}

select:invalid {
    color: gray;
}

select:valid {
    color: black;
}

select:invalid + .invalid-feedback {
    display: block;
    color: red;
}

.invalid-feedback {
    display: none;
}

.navbar-light .navbar-nav .nav-link {
    color: #000;
}

.navbar-light .navbar-nav .nav-link:hover {
    color: #333;
}

#main-content {
    display: flex;
    flex-direction: column;
    min-height: 100%;
}

.btn-container {
    display: flex;
    gap: 10px; 
}