html {
    font-size: 14px;
    position: relative;
    min-height: 100%;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

body {
  margin-bottom: 60px;
}

/********************* SPINNER *************************/
.spinner {
    position: absolute;
    left: 46%;
    top: 40%;
    transform: translate(-50%, -50%);
    width: 100px;
    height: 100px;
    border-radius: 50%;
    border: 8px solid lightgray;
    border-top: 8px solid #f9cc33;
    border-bottom: 8px solid #f9cc33;
    animation: anime 1.4s ease infinite;
}

@keyframes anime {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

.spinner::before {
    position: absolute;
    content: "";
    width: 200%;
    height: 200%;
    left: 50%;
    top: 50%;
    border-radius: inherit;
    opacity: 0.6;
    transform: translate(-50%, -50%);
    border: 10px solid lightgray;
    border-left: 10px solid #f9cc33;
    border-right: 10px solid #f9cc33;
}

.spinner::after {
    position: absolute;
    content: "";
    width: 300%;
    height: 300%;
    left: 50%;
    top: 50%;
    border-radius: inherit;
    opacity: 0.6;
    transform: translate(-50%, -50%);
    border: 12px solid lightgray;
    border-top: 12px solid #f9cc33;
    border-bottom: 12px solid #f9cc33;
}

/* Bootstrap spinner */
.spinner-wrapper {
    background: rgba(0, 0, 0, 0.5);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
}

.spinner-border {
    width: 60px;
    height: 60px;
}