html, body {
    width: 100%;
    height: 100%;
    padding: 0;
    margin: 0;
    background-image: url("../img/common/bg.png");
}
.main {
    margin: auto;
    width: 80%;
}
.common-content-box {
    padding: 30px;
    margin-top: 50px;
    border-radius: 10px;
}
.header-nav {
    width: 100%;
    color: white !important;
}
.footer {
    width: 100%;
    height: 200px;
    margin-top: 20px;
    padding: 50px 200px;
}
@media screen and (max-width: 379px) {
    .footer {
        width: 100%;
        height: 200px;
        margin-top: 20px;
        padding: 80px 30px 30px 30px;
    }
}
@media screen and (min-width: 380px) and (max-width: 800px) {
    .footer {
        width: 100%;
        height: 100%;
        margin-top: 20px;
        padding: 10px;
        position: relative;
    }
}

@media screen and (min-width: 800px) and (max-width: 1024px) {
    .footer {
        width: 100%;
        height: 100%;
        margin-top: 20px;
        padding: 80px 30px 30px 30px;
        position: relative;
    }
}