body {
    margin: 0;
    padding: 0;
    display: block;
    position: relative;
}

.bg {
    background: #fff url(bg.jpg) no-repeat center center;
    height: 100vh;
    /* overflow: hidden; */
    background-size: cover;
}

.dialog {
    width: 40%;
    max-width: 765px;
    min-width: 300px;
    margin: auto;
    text-align: center;
    /* top: 50%; */
    position: fixed;
    top: 25%;
    left: 30%;
}

.title {
    max-height: 62px;
    background: rgba(0,0,0,0.78);
    padding: 18px;
}

.title img {
    max-width: 100%;
}

.body {
    background: #fff;
    max-height: 344px;
    padding: 118px 30px;
}

.body img {
    max-width: 100%;
}