.online_base {
    background: url(../img/online_base.png) no-repeat;
    padding-bottom: 60px;
}
.form_main {
    background-color: #fff;
    padding: 70px 350px;
}
.form_main input {
    line-height: 35px;
    border: 1px solid #a0a0a0;
    padding-left: 12px;
    width: calc(100% - 80px);
}
.form_main div {
    margin: 12px 0;
}
.form_main span {
    width: 70px;
    display: inline-block;
}