console 命令行工具 X clear

console

<div class="breathe"></div>

.breathe {
    width: 14px;
    height: 14px;
    border-radius: 10px;
    background: #333;
    animation: breathe 1.5s ease-in-out reverse infinite;
}

@keyframes breathe {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.4);
    }
}