body {
    background-color: #fff;
    background-image: url("./images/background.jpg");
    background-size: cover;
    margin: 0;
    padding: 0
}

.wrapper {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    margin-top: 20px;
}

.display {
    position: relative;
    left: 0px;
    height: 600px
}

div {
    background-repeat: no-repeat;
    background-size: 100%;
    overflow: hidden
}

iframe {
    transform: scale(0.219);
    -webkit-transform: scale(0.219);
    -o-transform: scale(0.219);
    -ms-transform: scale(0.219);
    -moz-transform: scale(0.219);
    transform-origin: top left;
    -webkit-transform-origin: top left;
    -o-transform-origin: top left;
    -ms-transform-origin: top left;
    -moz-transform-origin: top left;
    margin: 0;
    padding: 0;
    position: relative;
    background-color: #fff;
    border-color: #000
}

.mobile {
    background-image: url("./images/iphone-optimised.png");
    position: absolute;
    width: 95px;
    height: 196px;
    top: 375px;
    left: 300px;
    z-index: 5
}

.mobile iframe {
    width: 320px;
    height: 480px;
    top: 32px;
    left: 11px;
    overflow-y: hidden
}

.tablet {
    background-image: url("./images/ipad-optimised.png");
    width: 246px;
    height: 400px;
    z-index: 3;
    position: absolute;
    left: 120px;
    top: 230px
}

.tablet iframe {
    width: 768px;
    height: 1024px;
    top: 35px;
    left: 38px;
    overflow-y: hidden
}

.laptop {
    background-image: url("./images/laptop-screen-optimised.png");
    width: 477px;
    height: 307px;
    top: 264px;
    left: 560px;
    position: absolute;
    z-index: 2
}

.laptop iframe {
    width: 1280px;
    height: 802px;
    top: 26px;
    left: 60px;
    transform: scale(0.277);
    -webkit-transform: scale(0.277);
    -o-transform: scale(0.277);
    -ms-transform: scale(0.277);
    -moz-transform: scale(0.277);
    transform-origin: top left;
    -webkit-transform-origin: top left;
    -o-transform-origin: top left;
    -ms-transform-origin: top left;
    -moz-transform-origin: top left
}

.desktop {
    position: absolute;
    width: 566px;
    height: 538px;
    background-image: url("./images/large-screen-optimised.png");
    top: 0px;
    left: 220px;
    z-index: 1
}

.desktop iframe {
    left: 28px;
    top: 38px;
    width: 1600px;
    height: 992px;
    transform: scale(0.3181);
    -webkit-transform: scale(0.3181);
    -o-transform: scale(0.3181);
    -ms-transform: scale(0.3181);
    -moz-transform: scale(0.3181);
    transform-origin: top left;
    -webkit-transform-origin: top left;
    -o-transform-origin: top left;
    -ms-transform-origin: top left;
    -moz-transform-origin: top left
}

.input {
    margin-top: 20px;
}
input {
    outline: none;
    height: 30px;
    border: 0;
    padding: 5px 8px;
    border-radius: 5px;
    width: 100%;
    font-size: 18px;
    letter-spacing: 1px;
}



/* ------------------------- 适配不同分辨率 ------------------------------ */
@media (max-width: 1160px) {
    .display {
        width:95%;
        height: 550px;
        transform: scale(0.81);
        -webkit-transform: scale(0.81);
        -o-transform: scale(0.81);
        -ms-transform: scale(0.81);
        -moz-transform: scale(0.81)
    }

    .desktop {
        left: 180px
    }

    .laptop {
        left: 520px
    }

    .tablet {
        left: 80px
    }

    .mobile {
        left: 260px
    }
}

@media (max-width: 1070px) {
    .display {
        left:-50px
    }
}

@media (max-width: 1000px) {
    .display {
        height:500px;
        transform: scale(0.71);
        -webkit-transform: scale(0.71);
        -o-transform: scale(0.71);
        -ms-transform: scale(0.71);
        -moz-transform: scale(0.71);
        top: -40px
    }

    .desktop {
        left: 140px
    }

    .laptop {
        left: 480px
    }

    .tablet {
        left: 40px
    }

    .mobile {
        left: 220px
    }
}

@media (max-width: 850px) {
    .display {
        height:500px;
        transform: scale(0.65);
        -webkit-transform: scale(0.65);
        -o-transform: scale(0.65);
        -ms-transform: scale(0.65);
        -moz-transform: scale(0.65)
    }

    .desktop {
        left: 100px
    }

    .laptop {
        left: 440px
    }

    .tablet {
        left: 0px
    }

    .mobile {
        left: 180px
    }
}

@media (max-width: 768px) {
    .display {
        height:450px;
        transform: scale(0.55);
        -webkit-transform: scale(0.55);
        -o-transform: scale(0.55);
        -ms-transform: scale(0.55);
        -moz-transform: scale(0.55)
    }

    .button {
        font-size: 1.6em;
        line-height: 1.75em;
        margin-top: 0.5em;
        width: 100%
    }
}

@media (max-width: 670px) {
    .display {
        height:400px;
        left: -70px;
        transform: scale(0.45);
        -webkit-transform: scale(0.45);
        -o-transform: scale(0.45);
        -ms-transform: scale(0.45);
        -moz-transform: scale(0.45)
    }
}

@media (max-width: 580px) {

    .button {
        width: 100%;
        float: left;
        font-size: 1.4em;
        margin-top: 0.5em
    }
}

@media (max-width: 560px) {
    .display {
        height:270px;
        top: -65px;
        transform: scale(0.37);
        -webkit-transform: scale(0.37);
        -o-transform: scale(0.37);
        -ms-transform: scale(0.37);
        -moz-transform: scale(0.37)
    }
}

@media (max-width: 440px) {
    .display {
        left:-17px;
        top: -65px;
        width: 70px;
        transform: scale(0.35);
        -webkit-transform: scale(0.35);
        -o-transform: scale(0.35);
        -ms-transform: scale(0.35);
        -moz-transform: scale(0.35)
    }
}

@media (max-width: 380px) {
    .display {
        height:235px;
        left: -17px;
        top: -65px;
        width: 70px;
        transform: scale(0.27);
        -webkit-transform: scale(0.27);
        -o-transform: scale(0.27);
        -ms-transform: scale(0.27);
        -moz-transform: scale(0.27)
    }

    .desktop {
        left: 100px
    }

    .laptop {
        left: 515px
    }

    .tablet {
        left: 0px
    }

    .mobile {
        left: 180px
    }
}