* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: all .5s ease;
    -webkit-transition: all .5s ease;
}

.w {
    width: 1200px;
    margin: 0 auto;
}

a {
    color: #333;
    cursor: pointer;
    text-decoration: none;
}

ul li {
    list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 300;
    margin: 0;
}

em,
i {
    font-style: normal;
}

body {
    font-family: "微软雅黑", sans-serif;
}

img {
    border: 0;
    vertical-align: middle;
}