.smooth-back-to-top-button {
    position: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(15px);
    transition: all 200ms linear;
    overflow: visible;
}

.smooth-back-to-top-button.active-progress {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.smooth-back-to-top-button::after {
    top: 0;
    left: 0;
    z-index: 1;
    text-align: center;
    position: absolute;
    font-family: 'wpxpress';
    transition: all 200ms linear;
}

.smooth-back-to-top-button svg path,
.smooth-back-to-top-button svg rect {
    fill: none;
}

.smooth-back-to-top-button svg.progress-circle {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.smooth-back-to-top-button svg.progress-circle path,
.smooth-back-to-top-button svg.progress-circle rect {
    box-sizing: border-box;
    transition: all 200ms linear;
}