body {
    background-color: #f2f2f2;
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

header {
    background-color: #0074D9;
    color: #ffffff;
    padding: 1px 10px;
    display: flex;
    justify-content: space-between;
    text-align: center;
    border-radius: 5px;
}


.menu {
    padding: 10px 0;
}

.menu ul {
    display: flex;
    flex-wrap: nowrap;
    justify-content: center;
    padding: 0;
    margin: 0;
    list-style: none;
}

.menu ul li {
    margin-right: 20px;
}

.menu ul li:last-child {
    margin-right: 0;
}

.menu ul li a {
    text-decoration: none;
    color: inherit;
    font-size: 20px;
    padding: 10px 20px;
    display: block;
}

.menu ul li a:hover {
    background-color: #0056b3;
    border-radius: 5px;
}

@media (max-width: 768px) {
    .menu ul li a {
        font-size: 18px;
        padding: 8px 16px;
    }

    .menu ul li {
        margin-right: 15px;
    }
}

@media (max-width: 480px) {
    .menu ul {
        flex-wrap: wrap;
    }

    .menu ul li {
        margin-right: 10px;
        margin-bottom: 10px;
    }

    .menu ul li a {
        font-size: 16px;
        padding: 6px 12px;
    }
}


.search {
    float: right;
    margin-right: 0px;
    height: 20px;
    margin-top: 40px;
}

.search input[type="text"] {
    padding: 10px;
    border-radius: 5px;
    border: 1px solid #ccc;
    width: 200px;
}

.container {
    background-color: #ffffff;
    padding: 20px;
    width: 60%;
    height: auto;
    margin: 20px auto;
    border-radius: 10px;
}


.lectures  {
    font-size: 18px;
    padding-left: 20px;
    list-style: none;
}

.lectures li {
    position: relative;
    margin-bottom: 20px;
    padding-left: 30px;
}

.lectures li::before {
    content: "➜";
    position: absolute;
    left: 0;
    color: #333;
    font-size: 20px; /* Розмір стрілки */
}

.lectures a {
    text-decoration: none;
    color: rgb(0, 0, 0);
    transition: color 0.3s;
}

.lectures a:hover {
    color: #0056b3;
}



.presentation  {
    font-size: 18px;
    padding-left: 20px;
    list-style: none;
}

.presentation li {
    position: relative;
    margin-bottom: 10px;
    padding-left: 0px;
}

.presentation li::before {
    content: "✧";
    left: 0;
    color: #333;
    font-size: 30px;
}

.presentation a {
    text-decoration: none;
    color: rgb(0, 0, 0);
    transition: color 0.3s;
}

.presentation a:hover {
    color: #0056b3;
}