.center {
    margin: auto;
    width: 90%;
    /*border: 3px solid #4510af;*/
    padding: 10px;
}

.center h1{
    margin: 0;
    padding: 0;
    border: none;
    padding: 10px;
}

h1{
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 60px;
    color: rgb(0, 0, 182);
}

ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #5b7bf1;
}

li {
    float: left;
    border-right:1px solid #bbb;
}

li:last-child {
    border-right: none;
}

li a {
    display: block;
    color: white;
    text-align: center;
    font-size: 30px;
    padding: 14px 16px;
    text-decoration: none;
}

li a:hover {
    background-color: #dddddd89;
}

.active {
    background-color: #4CAF50;
}

.contentss {
    display: block;
    color: rgb(78, 92, 244);
    text-align: left;
    font-size: 25px;
    padding: 14px 16px;
    text-decoration: none;
}