ドットインストール - 3分動画でマスターできるプログラミング学習サービス

styles.css

@charset "utf-8";

body {
    padding: 40px;
}

.heart {
    font-size: 40px;
    color: #c2b5b5;
    user-select: none;
}

.like {
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    background: pink;
}

.like [type="checkbox"] {
    display: none;
}

.like [type="checkbox"]:checked ~ .heart {
    animation: heart 0.6s forwards;
}

@keyframes heart {
    0% {
        transform: scale(0);
    }
    50% {
        transform: scale(1.5);
    }
    100% {
        transform: scale(1);
        color: red;
    }
}

.ripple {
    width: 85px;
    height: 85px;
    background: red;
    border-radius: 50%;
    transform: scale(0);
}

.like [type="checkbox"]:checked ~ .ripple {
    animation: ripple 0.6s forwards;
}

@keyframes ripple {
    0% {
        transform: scale(0);
    }
    50% {
        transform: scale(1.5);
    }
    100% {
        transform: scale(1);
        opacity: 0;
    }
}