#main {
    width: 800px;
    margin: 0 auto;
}

#main ul li {
    margin-top: 30px;
    display: flex;
    border-bottom: 1px solid #ccc;
    padding-bottom: 30px;
}

#main_left {
    width: 300px;
    height: 150px;
    overflow: hidden;
}

#main_left img {
    width: 300px;
    height: 150px;
}

#main_left img:hover {
    position: relative;
    width: 340px;
    height: 190px;
    left: -20px;
    top: -20px;
}

a {
    color: black;
}

#main_right {
    position: relative;
    width: 500px;
    box-sizing: border-box;
    padding: 10px 30px;
}

h3 {
    font-size: 16px;
}

p {
    margin-top: 20px;
    font-size: 12px;
}

.gengsuo {
    position: absolute;
    width: 100px;
    height: 30px;
    background-color: cadetblue;
    color: #fff;
    text-align: center;
    line-height: 30px;
    bottom: 0px;
    font-size: 14px;
}

.gengsuo a {
    color: #fff;
}

.gengsuo:hover {
    font-size: 16px;
}