#nav {
    width: 96%;
    height: var(--nav-height);
    
    
    background-color: white;
    position: fixed;
    top: 0;
    z-index: 10;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2vw;
    opacity: 80%;
    
}

#icon {
    font-size: 1.5em;
    font-family: var(--nav-font);
    font-weight: 700;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
}

.centered-nav {
    display: flex; 
    justify-content: center; 
    flex-wrap: wrap; 
    gap: 10px; 
}

.nav-button-main {
    margin-left: 20px; 
    margin-right: 20px; 
    font-family: 'Noto Sans', sans-serif;
    color: rgb(23, 2, 54);
    font-weight: bold; 
}

.nav-button-main:hover {
    text-decoration: none; 
}

.nav-button {
    display: inline-flex; 
    align-items: center; 
    margin-left: 4px;
    margin-right: 4px;
    margin-top: 10px;
    font-size: 16px;
    font-family: var(--nav-font);
    color: rgb(23, 2, 54);
    font-weight: bold;
    padding: 10px; 
    border: 1px solid #000; 
    border-radius: 5px; 
    text-decoration: none; 
    background-color: #fff; 
    transition: background-color 0.2s, color 0.2s, border 0.2s; 
}

.nav-button img {
    margin-right: 5px; 
    width: 20px; 
    height: 20px;
}

.nav-button:hover {
    background-color: #000; 
    color: #fff; 
    text-decoration: none; 
}

.nav-button:hover img {
    filter: brightness(0) invert(1); 
}

.nav-button:active {
    border: 5px solid #ccc; 
    text-decoration: none; 
}

.ignore {
    color: var(--SJTU-red);
}

#nav-icon {
    width: 1em;
    margin: 5px;
}


#footer {
    width: 100%;
    height: var(--nav-height);
    background-color: rgba(189, 179, 190, 0.29);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 1;
    font-size: 0.7em;
    color: grey;
    margin-top: 40px;
}