用css实现图片像蹦起来一样。
效果：

代码如下：

.logo {
    background-image: url(logo.png);
    background-repeat: no-repeat;
    height: 150px;
    margin: 50px;
    width: 154px;
}

.logo:hover {
    animation-name: bounce;
    animation-duration: 0.5s;
    animation-timing-function: linear;
    animation-iteration-count: 1;
}

@keyframes bounce {
    45% {
        height: 130px;
        margin-top: 70px;
    }
    55% {
        height: 130px;
        margin-top: 70px;
    }
    75% {
        height: 170px;
        margin-top: 0px;
    }
}