.whole-container-header-0 {
    z-index: 1;
    position: relative;
    font-size: 30px;
    color: black;
    padding: 0.7%;
    margin: 5% 8%;
    user-select: none;
    border: 2px solid black;
}

.whole-container-header-0::before {
    content: '';
    position: absolute;
    inset: 0;
    backdrop-filter: blur(10px);
    z-index: -1;
}