.spinner-1 {
    width: 40px;
    height: 40px;
    background-color: var(--default-c);
    margin: 50px auto;
    animation: sk-rotateplane 1.2s infinite ease-in-out;
}

@keyframes sk-rotateplane {
    0% { transform: perspective(120px); }
    50% { transform: perspective(120px) rotateY(180deg); }
    100% { transform: perspective(120px) rotateY(180deg)  rotateX(180deg); }
}

@keyframes sk-rotateplane {
    0% { transform: perspective(120px) rotateX(0deg) rotateY(0deg); }
    50% { transform: perspective(120px) rotateX(-180.1deg) rotateY(0deg); }
    100% { transform: perspective(120px) rotateX(-180deg) rotateY(-179.9deg); }
}

.spinner-2 {
    text-align: center;

    > div {
        width: 18px;
        height: 18px;
        background-color: var(--default-c);
        border-radius: 100%;
        display: inline-block;
        animation: sk-bouncedelay 1.4s infinite ease-in-out both;
    }

    .bounce1 {
        animation-delay: -0.32s;
    }

    .bounce2 {
        animation-delay: -0.16s;
    }
}

@keyframes sk-bouncedelay {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1.0); }
}

@keyframes sk-bouncedelay {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1.0); }
}

.spinner-3 {
    width: 40px;
    height: 40px;
    margin: 50px auto;
    background-color: var(--default-c);

    border-radius: 100%;
    animation: sk-scaleout 1.0s infinite ease-in-out;
}

@keyframes sk-scaleout {
    0% { transform: scale(0) }
    100% {
        transform: scale(1.0);
        opacity: 0;
    }
}

@keyframes sk-scaleout {
    0% {
        transform: scale(0);
    } 100% {
        transform: scale(1.0);
        opacity: 0;
    }
}