header{
    background-color: #55aaff;
    padding: 15px 30px;
    color: white;
    font-size: 24px;
    font-weight: bold;
    text-align: left;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}
header a {
    color: white;
    font-weight: bold;
    font-size: 24px;
    padding-left: 30px;
    text-decoration: none;
}