/* banner 部分 */
.banner {
    width: 100%;
    /* background-color: blue; */
    padding-top: 50px;
    position: fixed;
    min-width: 320px;
    max-width: 640px;
    margin: 0 auto;
}
.banner form {
    width: 100%;
    margin-top: 20px;
}
.banner form div {
    width: 100%;
    height: 40px;
    padding: 0 12px 0 12px;
    position: relative;
}
.banner form div p {
    width: 40px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    position: absolute;
    left: 12px;
    top: -1px;
    font-weight: 700;
}
.banner form div input {
    width: 100%;
    height: 100%;
    padding-left: 50px;
    border-bottom: 1px solid rgb(196, 190, 190);
    background-color: #e9e9e9;
}
.banner form div:last-child {
    width: 100%;
    height: 38px;
    margin-top: 50px;
    padding: 0px 12px 0px 12px;
}
.banner form div:last-child a {
    width: 100%;
    height: 100%;
    line-height: 38px;
    text-align: center;
    display: block;
    color: #fff;
    border-radius: 20px;
    background-color: #64f6cf;
    box-shadow: 0px 6px 16px #64f6cf;
}