header {
padding: 5px;
background-color: #b0d4f1;
color: #003366;
text-align: center;
}

.hero-image {
padding: 20px;
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 50%;
}

.countdown {
font-size: 2em;
margin: 4px 0;
color: #005f99;
text-align: center;
}

.details {
font-size: 1.75em;
margin: 5px;
text-align: center;
background-color: #e0f0ff;
}



footer {
margin-top: 50px;
padding: 2px;
background-color: #b0d4f1;
color: #003366;
text-align: center;
}













/* Hamburger menu styles */
.menu {
    position: absolute;
    top: 10px;
    left: 10px;
    z-index: 1000;
}

.menu input[type="checkbox"] {
    display: none;
}

.menu label {
    display: block;
    width: 60px;
    height: 60px;
    cursor: pointer;
}

.menu label span {
    display: block;
    height: 4px;
    background: #003366;
    margin: 12px 0;
}

.nav {
    display: none;
    position: absolute;
    top: 50px;
    left: 10px;
    background: #c8e6ff;
    border: 1px solid #ccc;
    padding: 10px;
    width: 300px;
}

.menu input:checked ~ .nav {
    display: block;
}

.nav a {
    display: block;
    padding: 8px;
    color: #003366;
    text-decoration: none;
    font-size: 22px;
}

.submenu {
    margin-left: 15px;
}