第二十四天，HTML/Vue代码在线实时编辑、预览

            
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            body{
    margin: 0;
    padding: 0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #0B1734
}

.container {
    width: 100px;
    height: 100px;
    position: relative;
    animation: animate 1s linear infinite;
    transform: rotate(45deg);
}

span {
    position: absolute;
    width: 50px;
    height: 50px;
    animation: rotate 1s linear infinite
}

span:nth-child(1) {
    top: 0;
    left: 0;
    background-color: #FCEBA7;
}

span:nth-child(2) {
    top: 0;
    right: 0;
    background-color: #55DDB9;
}

span:nth-child(3) {
    bottom: 0;
    left: 0;
    background-color: #FD6C64;
}

span:nth-child(4) {
    bottom: 0;
    right: 0;
    background-color: #1F78B0;
}

@keyframes rotate {
    0% {
        transform: rotate(0deg);
    }

    10% {
        transform: rotate(0deg);
    }

    50% {
        transform: rotate(90deg);
    }

    90% {
        transform: rotate(90deg);
    }

    100% {
        transform: rotate(90deg);
    }
}

@keyframes animate {
    0% {
        width: 100px;
        height: 100px;
    }

    10% {
        width: 100px;
        height: 100px;
    }

    50% {
        width: 150px;
        height: 150px;
    }

    90% {
        width: 100px;
        height: 100px;
    }

    100% {
        width: 100px;
        height: 100px;
    }

}