div[id$="__container"] {
    position: relative;
}

div[id^="section"].is-animate svg circle {
    opacity: 0.75;
}

[class^="svg"] {
    position: absolute;
    inset: 0;
    margin: auto;
    z-index: -1;
    max-width: 100%;
    max-height: 100%;
}

[class^="svg"] circle {
    opacity: .75;
    transition: transform 2.5s ease 0s, opacity 2s ease 0s;
}