styles.css

body {
    background-image: url("inicio-fondo.jpg");
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-position: center;
    background-size: cover;
    color: white;
}

h1,
h2 {
    text-align: center;
    line-height: 3px;
}

h3,
h4 {
    line-height: 0;
}

li {
    margin-top: 5px;
}

a:hover {
    color: red;
}

a,
a:visited {
    color: white;
}

.navbar {
    overflow: hidden;
    background-color: green;
    width: fit-content;
}

.navbar a {
    float: left;
    text-align: center;
    padding: 0;
    text-decoration: none;
}

.dropdown {
    float: left;
    overflow: hidden;
}

.dropdown .dropbtn {
    background-color: green;
    color: white;
    padding: 5px;
    font-size: 18px;
    font-family: initial;
    border: none;
    margin: 0;
    outline: none;
}

.navbar a:hover,
.dropdown:hover .dropbtn {
    background-color: red;
}

.dropdown-content {
    font-size: 18px;
    display: none;
    position: absolute;
    z-index: 1;
}

.dropdown-content a {
    float: none;
    background-color: black;
    color: white;
    padding: 5px;
    text-decoration: none;
    display: block;
    text-align: left;
}

.dropdown:hover .dropdown-content {
    display: block;
}

#centerBox {
    padding: 0;
    background-color: rgba(0, 0, 0, 0.5);
}

#centerBox {
    padding-top: 1px;
    padding-left: 3px;
}

.footer {
    position: relative;
    padding-left: 3px;
    padding-top: 0.5px;
    left: 0;
    bottom: 0;
    width: 100%;
    background-color: rgba(255, 0, 0, 0.5);
}