ul {
    list-style-type: none;
    margin: 0px;
    padding: 0px;
    overflow: hidden;
    background-color: #9381FF;
    
}

li {
    float: left;
}

li a {
    display: block;
    color: white;
    padding: 12px 14px;
    text-decoration: none;
    font-size: 20px;
    margin-top: 10px;
    margin-bottom: 10px;
}

li a:hover {
    background-color: rgb(37, 100, 99);
}

header {
    text-align: center;
}