* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html,
body {
    height: 100vh;
}

body {
    background-color: #d9e6c4;
    font-family: Roboto, Arial, sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
}

.bar {
    height: 10px;
    width: 300px;
    background: #262727;
}

.ball-group {
    display: flex;
    justify-content: space-around;
}

.ball {
    display: inline-block;
    height: 100px;
    border: 1px solid #515252;
    position: relative;
    transform-origin: top;
}

.ball::before {
    content: '';
    position: absolute;
    width: 60px;
    height: 60px;
    background: #515252;
    border-radius: 100%;
    top: 100%;
    left: -30px;
}

.ball:first-child {
    animation: left 2s ease-in-out infinite;
}

.ball:last-child {
    animation: right 2s ease-in-out infinite 1s;
}

@keyframes left {

    0%,
    50%,
    100% {
        transform: rotate(0deg);
    }

    25% {
        transform: rotate(45deg);
    }
}

@keyframes right {

    0%,
    50%,
    100% {
        transform: rotate(0deg);
    }

    25% {
        transform: rotate(-45deg);
    }
}

#by {
    font-family: 'Arima Madurai', cursive;
    color: #FFEAA5;
    font-size: 10px;
}