body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.container {
    width: 80%;
    margin: 0 auto;
}

.menuchinh{
    padding-top: 9px;
    padding-bottom: 5px;
    color:black;
    font-weight: bold;
    cursor:pointer;
    display: flex;
}
.menuchinh li:hover{
    display:inline-block;
    color:pink;
}

.header {
    background-color: #003366;
    color: white;
    text-align: center;
    padding: 20px 0;
}


.header h1 {
    margin: 0;
    font-size: 2.5em;
}

.header p {
    margin: 10px 0 0;
    font-size: 1.2em;
}

.main-content {
    flex: 1;
    padding: 20px 0;
}

.event-details, .additional-info, .gallery {
    margin-bottom: 20px;
    text-align: center;
}
.
.gallery-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.gallery-grid img {
    width: 32%;
    height: auto;
}

.footer {
    background-color: #003366;
    color: #fff;
    text-align: center;
    padding: 10px 0;
}

@media (max-width: 768px) {
    .container {
        width: 95%;
    }

    .gallery-grid img {
        width: 48%;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 2em;
    }

    .header p {
        font-size: 1em;
    }

    .gallery-grid img {
        width: 400%;
        display: inline;
        padding-left:60px;
        padding-right: 35px;
        font-size: 100px;
        text-align: center;

}
}