* {
    margin: 0;
    padding: 0;
    font-family: Arial, Helvetica, sans-serif;
}

header {
    background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url(gettyimages-1354937085.jpg);
    height: 100vh;
    background-size: cover;
    background-position: center;
}


ul {
    list-style-type: none;
    float: right;
}

ul li {
    display: inline-block;
    margin-top: 25px;
    padding: 10px;
    width: 150px;
}

ul li a {
    text-decoration: none;
    color: black;
    padding: 10px 30px;
    border: 1px solid transparent;
}

ul li a:hover {
    background-color: white;
    color: black;
    transition: 0.6s ease;
}

.main {
    max-width: 1200px;
    margin: auto;
}

ul li.active a {
    background-color: white;
    color: black;
}

.but1 {
    position: relative;
    display: inline-block;
}

.but2 {
    padding: 16px;
    font-size: 16px;
    border: none;
    background-color: transparent;
}

.but3 {
    display: none;
    position: absolute;
    background-color: white;
    font-size: 15px;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px(0, 0, 0, 0.2);
    z-index: 1;
}

.but3 a {
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    ;
}

.but3 a:hover {
    background-color: aqua;
}

.but1:hover .but3 {
    display: block;
}

.but3 a {
    color: black;
}

.title {
    position: absolute;
    top: 45%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.title h1 {
    color: antiquewhite;
    font-size: 50px;
    text-align: center;
    margin-bottom: 20px;
}

.title p {
    color: white;
    font-size: 20px;
    text-align: center;
}

table,
tr,
td {
    border: 1px solid rgba(0, 0, 0, 0.397);
    border-collapse: collapse;
    min-height: 6cm;
    min-width: 3cm;
    padding: 20px;
    background-color: rgba(248, 248, 255, 0.171);
}

.t1 {
    margin-top: 1cm;
    margin-left: 1cm;
}

button {
    padding: 15px 25px;
    background-color: rgb(44, 65, 131);
    color: white;
    font-size: 20px;
}

main {
    background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url(hx4LX5.webp);
    background-size: cover;
    background-position: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}