#slogan {
    display: inline-block;
    top: 35%;
    position: absolute;
}

h1 {
    font-size: 64px;
}

#home-img {
    position: absolute;
    top: 0;
    right:0;
    height: 900px;
}

#bg {
    position: absolute;
    z-index: -1;
    left: 0;
    bottom: 0;
    height: 500px;
}

#bg-mobile {
    position: absolute;
    z-index: -1;
    left: 0;
    bottom: 0;
    height: 250px;
    display: none;
}

.mark {
    background-color: #FF440E;
    color: white;
    font-size: 14px;
    margin-top: 45px;
    text-align: center;
    border-radius: 20px;
    height: 40px;
    line-height: 40px;
    padding: 0 13px;
}

#index-footer {
    text-align: center;
    z-index: 1000;
    position: absolute;
    width: 100%;
    bottom: 24px;
    color: #C0C0C0;
}

#index-footer p {
    font-size: 10px;
    margin: 0;
}

#index-footer a {
    color: #C0C0C0;
}

@media (max-width: 2300px) {
    #home-img {
        height: 800px;
    }
}

@media (max-width: 2000px) {
    #home-img {
        height: 700px;
    }
}

@media (max-width: 1700px) {
    #home-img {
        height: 650px;
    }

    #bg {
        height: 450px;
    }
}

@media (max-width: 1450px) {
    #bg {
        height: 400px;
    }
}

@media (max-width: 1300px) {
    #home-img {
        height: 600px;
    }

    #bg {
        height: 350px;
    }
}

@media (max-width: 1200px) {
    #home-img {
        height: 550px;
    }

    #bg {
        height: 320px;
    }
}

@media (max-width: 992px) {
    #home-img {
        height: 490px;
    }

    #slogan {
        top: 60%;
    }
}

@media (max-width: 880px) {
    #home-img {
        height: 420px;
    }

    #bg {
        height: 280px;
    }
}

@media (max-width: 767px) {
    #index-footer {
        display: none;
    }

    #home-img {
        height: auto;
        width: 97%;
        margin-top: 60px;
    }

    #bg {
        display: none;
    }

    #bg-mobile {
        display: block;
    }

    h1 {
        font-size: 49px;
        margin-left: 5px;
    }

    .mark {
        font-size: 12px;
    }
}