html,
body {
    max-width: 100%;
    overflow-x: hidden;
}

footer {
    width: 100%;
    min-height: 300px;
    background-color: #ececec;
    overflow-y: hidden;
}

.spinner-overlay {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    z-index: 9;
    position: absolute;
    justify-content: center;
    align-items: center;
    flex-grow: 1;
    background: rgba(255, 255, 255, 0.75);
    border: 1px solid rgba(0, 0, 0, 0.25);
    border-radius: 0.25rem;
}