User:Ismailim/timeless.css

.mw-header-container {
    height: 0;
    position: fixed;
    z-index: 100;
    top: 0;
    width: 100%;
    background: #148fe6a6;
    color: #001133;
    padding: 0.5em 0 0;
    min-height: 3.125em;
    box-sizing: border-box;
}