style.css

body {
    background-color: #003366;
    color: #ffffff;
    padding-top: 20px;
}
h1 {
    color: #fff;
    text-align: center;
}

/* Função para alto contraste */
body.high-contrast {
    background-color: #000000;
    color: #ffffff;
}
h1.high-contrast {
    color: goldenrod;
}
.high-contrast h1 {
    color: yellow;
}
.high-contrast #main {
    color: yellow;
}
.high-contrast .sidenav {
    background-color: grey;
}
.high-contrast .sidenav a {
    color: yellow;
}
#altoContraste {
    position: absolute;
    top: 10px;
    right: 10px;
}
.container {
    transition: margin-left .5s;
    background-color: #336699;
    border-radius: 15px;
    padding: 20px;
    margin-top: 20px;
    margin-left: 100px;
}
.white-text {
    color: white;
}
.main-content {
    transition: margin-left .5s;
    margin-left: 100px;
    /* Ajusta o conteúdo principal para o lado para acomodar o menu lateral */
    padding: 40px;
    /* Espaçamento do conteúdo principal */
}
.sidenav {
    transition: .5s;
    height: 100%;
    width: 0;
    position: fixed;
    z-index: 1;
    top: 0;
    left: 0;
    background-color: #336699;
    overflow-x: hidden;
    padding-top: 20px;
}

.sidenav a {
    padding: 8px 8px 8px 32px;
    text-decoration: none;
    font-size: 20px;
    color: #fff;
    display: block;
    transition: 0.3s;
}

.sidenav a:hover {
    color: #f1f1f1;
}

.sidenav .closebtn {
    position: absolute;
    top: 0;
    right: 25px;
    font-size: 36px;
    margin-left: 50px;
}
.img-container {
    text-align: center;
}
@media screen and (max-height: 450px) {
    .sidenav {
        padding-top: 15px;
    }

    .sidenav a {
        font-size: 18px;
    }
}
.dropdown {
    margin-bottom: 20px;

}
.dropdown-menu {
    background-color: #336699;
}
.dropdown-item {
    color: #ffffff;
}
.dropdown-item:hover {
    background-color: #003366;
}