#row-4-col-1 .wrapper {
    width: 100%;
    height: 100%;
    position: relative;
}
#row-4-col-1 .square {
    width: 200px;
    height: 200px;
    position: absolute;
    top: 100px;
    left: 100px;
    transform-origin: 0 0;
    transform: rotate(-135deg);
    overflow: hidden;
}
#row-4-col-1 .circle {
    border-radius: 50%;
    transform: translate(-50%, -50%);
    border-width: 4px;
    border-style: solid;
    border-color: dodgerblue;
    position: absolute;
    opacity: .5;
    animation-duration: 2s;
    animation-iteration-count: infinite;
}
#row-4-col-1 .circle:nth-child(1) {
    width: 1px;
    height: 1px;
    animation-name: r4c1-light1;
}
#row-4-col-1 .circle:nth-child(2) {
    width: 20px;
    height: 20px;
    animation-name: r4c1-light2;
}
#row-4-col-1 .circle:nth-child(3) {
    width: 40px;
    height: 40px;
    animation-name: r4c1-light3;
}
#row-4-col-1 .circle:nth-child(4) {
    width: 60px;
    height: 60px;
    animation-name: r4c1-light4;
}
#row-4-col-1 .circle:nth-child(5) {
    width: 80px;
    height: 80px;
    animation-name: r4c1-light5;
}
#row-4-col-1 .circle:nth-child(6) {
    width: 100px;
    height: 100px;
    animation-name: r4c1-light6;
}
@keyframes r4c1-light1 {
    35% {opacity: .5}
    40% {opacity: 1}
    95% {opacity: 1}
}
@keyframes r4c1-light2 {
    45% {opacity: .5}
    50% {opacity: 1}
    95% {opacity: 1}
}
@keyframes r4c1-light3 {
    55% {opacity: .5}
    60% {opacity: 1}
    95% {opacity: 1}
}
@keyframes r4c1-light4 {
    65% {opacity: .5}
    70% {opacity: 1}
    95% {opacity: 1}
}
@keyframes r4c1-light5 {
    75% {opacity: .5}
    80% {opacity: 1}
    95% {opacity: 1}
}
@keyframes r4c1-light6 {
    85% {opacity: .5}
    90% {opacity: 1}
    95% {opacity: 1}
}
#row-4-col-1 .wrapper {
    transform: translateY(20px);
}

#row-4-col-2 .wrapper {
    width: 80%;
    height: 80%;
    position: relative;
    overflow: hidden;
}
#row-4-col-2 .block {
    position: absolute;
    width: 10px;
    height: 80px;
    background-color: #f66;
    border-radius: 5px;
    opacity: 1;
    top: 40px;
    left: -20px;
    animation-name: r4c2-stream;
    animation-duration: 4s;
    animation-iteration-count: infinite;
    animation-timing-function: linear;
}
#row-4-col-2 .b1 {
    animation-delay: 0s;
}
#row-4-col-2 .b2 {
    animation-delay: .4s;
}
#row-4-col-2 .b3 {
    animation-delay: .8s;
}
#row-4-col-2 .b4 {
    animation-delay: 1.2s;
}
#row-4-col-2 .b5 {
    animation-delay: 1.6s;
}
#row-4-col-2 .b6 {
    animation-delay: 2s;
}
#row-4-col-2 .b7 {
    animation-delay: 2.4s;
}
#row-4-col-2 .b8 {
    animation-delay: 2.8s;
}
#row-4-col-2 .b9 {
    animation-delay: 3.2s;
}
#row-4-col-2 .b10 {
    animation-delay: 3.6s;
}

@keyframes r4c2-stream {
    /*   0% {transform: translateX(0); opacity: 1}
      49% {transform: translateX(180px); opacity: 1}
      50% {transform: translateX(180px); opacity: 0;} */
    100% {transform: translateX(300px)}
}

#row-4-col-3 .wrapper {
    width: 100px;
    height: 100px;
    position: relative;
    transform: scale(.8, .8);
}
#row-4-col-3 .ball {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: #f66;
    position: relative;
    left: 25px;
    animation-name: r4c3-jump;
}
#row-4-col-3 .cube {
    width: 100px;
    height: 50px;
    position: relative;
    bottom: -1px;
    background-color: dodgerblue;
    border-radius: 5px;
    animation-name: r4c3-spin;
}
#row-4-col-3 .shape {
    animation-duration: 2s;
    animation-timing-function: ease-in-out;
    animation-iteration-count: infinite;
}

@keyframes r4c3-spin {
    25% {transform: rotate(90deg)}
    50% {transform: rotate(180deg)}
    75% {transform: rotate(270deg)}
    100% {transform: rotate(1turn)}
}
@keyframes r4c3-jump {
    10% {transform: translateY(-32px)}
    25% {transform: translateY(-25px)}
    35% {transform: translateY(-32px)}
    50% {transform: translateY(0)}
    60% {transform: translateY(-32px)}
    75% {transform: translateY(-25px)}
    85% {transform: translateY(-32px)}
    100% {transform: translateY(0)}
}

#row-4-col-4 .wrapper {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    transition: all 2s;
    transform: scale(.6, .6);
}


#row-4-col-4 svg {
    display: block;
    width: 200px;
    height: 200px;
    position: absolute;
    fill: transparent;
}
#row-4-col-4 .teeth {
    stroke: dodgerblue;
    stroke-width: 4px;
}
#row-4-col-4 .ring {
    stroke: dodgerblue;
    stroke-width: 4px;
}

#row-4-col-4 .wrapper:hover {
    transform: scale(.6, .6) rotate(270deg);
}

#row-4-col-5 .wrapper {
    width: 300px;
    height: 100px;
    transform: scale(.6, .6) translateX(-150px);
}
#row-4-col-5 .square {
    width: 100px;
    height: 100px;
    background-color: dodgerblue;
    border-radius: 20px;
    position: absolute;
    animation-name: r4c5-spin;
    animation-duration: 2s;
    animation-iteration-count: infinite;
    animation-timing-function: linear;
}
#row-4-col-5 .enclosing {
    width: 100px;
    height: 100px;
    border-radius: 20px;
    position: absolute;
    bottom: 0;
    animation-name: r4c5-move;
    animation-duration: 2s;
    animation-iteration-count: infinite;
    animation-timing-function: linear;
}

@keyframes r4c5-move {
    12.5% {transform: translate(50px, -16px)}
    25% {transform: translate(100px, 0)}
    37.5% {transform: translate(150px, -16px)}
    50% {transform: translate(200px, 0)}
    62.5% {transform: translate(250px, -16px)}
    75% {transform: translate(300px, 0)}
    87.5% {transform: translate(350px, -16px)}
    100% {transform: translate(400px, 0)}
}
@keyframes r4c5-spin {
    100% {transform: rotate(360deg)}
}