メインビジュアルキャッチコピーの吹き出しアニメーションhtml・cssコードあり！

<div class="mv">
	<div class="mv__content">
		<div class="balloon">
			<div class="loading1 text-red">
				キャッチコピー○○○○
			</div>
			<div class="loading2">
				キャッチコピー○○○○
			</div>
			<div class="loading3">
				キャッチコピー○○○○
			</div>
		</div>
	</div>
	<div class="mv__img">
		<img src="https://kk-works.koukoba.net/wp-content/uploads/2023/10/person-dummy.webp" alt="社長などの写真" width="400" height="400">
	</div>
</div>

.mv {
    position: relative;
    display: flex;
    align-items: flex-end;
    gap: 5%;
}
.loading1,
.loading2,
.loading3 {
    text-align: center;
    font-weight: 700;
    margin: 0 auto;
    animation: extend 1.2s 1s cubic-bezier(0.215, 0.61, 0.355, 1) forwards;
    opacity: 0;
    transform-origin: left;
    line-height: 1;
}
.text-red {
    color: #e61e0b;
}
.balloon {
    width: 90%;
    background-color: #fff;
    opacity: 0;
    animation: balloon 4s 0.5s ease-in forwards;
}
.balloon::before,
.balloon::after {
    content: "";
    position: absolute;
}
@keyframes extend {
    0% {
        transform: rotateY(90deg);
        opacity: 0;
    }
    100% {
        transform: rotateX(0deg);
        opacity: 1;
    }
}
@media only screen and (min-width: 768px) {
    .mv {
        padding: 0 0 0 6.5%;
    }
    .mv__img img {
        width: 33vw;
    }
    .loading1 {
        font-size: 2.7vw;
        margin-bottom: 1.67vw;
    }
    .loading2 {
        font-size: 2.2vw;
        margin-bottom: 1.25vw;
        animation-delay: 1.4s;
    }
    .loading3 {
        font-size: 2.2vw;
        animation-delay: 1.7s;
    }
    .balloon {
        position: relative;
        margin: 2.5vw 6.67vw 2.5vw auto;
        padding: 2.5vw 0;
        border-radius: 2vw;
        border: 0.25vw solid #7f7f7f;
    }
    .balloon::before {
        left: 100%;
        top: 1.1vw;
        border-left: 8.33vw solid #7f7f7f;
        border-bottom: 4.17vw solid transparent;
    }
    .balloon::after {
        left: 98%;
        top: 1.3vw;
        border-left: 8.33vw solid #fff;
        border-bottom: 4.17vw solid transparent;
    }
    @keyframes balloon {
        0% {
            transform: rotateX(90deg);
            opacity: 0;
        }
        10%,100% {
            transform: rotateX(0deg);
            opacity: 1;
        }
    }
}
@media only screen and (max-width: 767px) {
    .balloon {
        position: absolute;
        bottom: -40vw;
        padding: 5vw 0;
        z-index: 10000;
        border-radius: 10px;
        border: 2px solid #7f7f7f;
    }
    .balloon::before {
        bottom: 100%;
        left: 90px;
        border-bottom: 30px solid #7f7f7f;
        border-left: 40px solid transparent;
    }
    .balloon::after {
        bottom: calc(100% - 5px);
        left: 87.5px;
        border-bottom: 30px solid #fff;
        border-left: 40px solid transparent;
    }
    @keyframes balloon {
        0% {
            transform: rotateX(90deg);
            opacity: 0;
        }
        10%,90% {
            transform: rotateX(0deg);
            opacity: 1;
        }
        100% {
            transform: rotateX(90deg);
            opacity: 0;
        }
    }
    .loading1 {
        font-size: 5.4vw;
        margin-bottom: 1.67vw;
    }
    .loading2 {
        font-size: 4.5vw;
        margin-bottom: 1.25vw;
        animation-delay: 1.4s;
    }
    .loading3 {
        font-size: 4.5vw;
        animation-delay: 1.7s;
    }
}