html,
body {
    height: 100%;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: #333;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
}

.youtube {
    width: 8rem;
    height: 5rem;
    border-radius: 20px;
    position: relative;
    border: 1px solid white;
    overflow: hidden;
}

.youtube::after {
    content: '';
    position: absolute;
    border: 20px solid transparent;
    border-left: 28px solid white;
    top: 50%;
    left: 45%;
    z-index: 10;
    transform: translateY(-50%);
}

.youtube::before {
    content: '';
    position: absolute;
    height: 100%;
    width: 20%;
    background-color: red;
    transform: translateX(-100%);
    animation: load 10s ease-in-out infinite;
}

@keyframes load {
    0%,
    2% {
        transform: translateX(-100%) scaleX(1);
    }

    8%,
    10% {
        transform: translateX(500%) scaleX(1);
    }

    18%,
    20% {
        transform: translateX(-100%) scaleX(1);
    }

    28%,
    30% {
        transform: translateX(500%) scaleX(1);
    }

    38%,
    40% {
        transform: translateX(200%) scaleX(1);
    }

    45%,
    50% {
        transform: translateX(200%) scaleX(5);
    }

    55% {
        transform: translateX(200%) scaleX(1);
    }

    58%,
    60% {
        transform: translateX(-100%) scaleX(1);
    }

    68%,
    70% {
        transform: translateX(500%) scaleX(1);
    }

    78%,
    80% {
        transform: translateX(-100%) scaleX(1);
    }

    88%,
    90% {
        transform: translateX(500%) scaleX(1);
    }

    98%,
    100% {
        transform: translateX(-100%) scaleX(1);
    }
}