* {
    padding: 0;
    margin: 0;
}

a {
    text-decoration: none;
}

html,
body {
    font-family: PingFangSC-Regular, PingFang SC;
    font-size: 62.5%;
    height: 100%;
    background: url(images/bg.png) no-repeat;
    background-size: cover;
    overflow-y: hidden;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #fff;
    height: 10rem;
    padding: 0 10%;
    position: fixed;
    width: 80%;
    z-index: 1000;
}

.logo-box {
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2.8rem;
    color: #333;
}

.logo-btn a {
    text-decoration: underline;
    color: #FF70B7;
    font-size: 2.2rem;
}

.logo-btn a:first-child {
    margin-right: 5rem;
}

.logo-btn a:hover {
    text-decoration: none;
}

.container {
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    top: 10rem;
}

.box {
    font-size: 6rem;
    line-height: 200%;
    color: #333;
    font-weight: 700;
    position: relative;
    z-index: 10;
    margin-top: 2rem;
}

.box-r {
    color: #FF70B7;
}

.banner {
    width: 110rem;
    position: fixed;
    bottom: 0;
    z-index: 5;
}

.footer {
    position: fixed;
    bottom: 0;
    color: #333;
    font-size: 2.4rem;
    line-height: 180%;
    padding: 15% 0 2rem;
    text-align: center;
    width: 100%;
    background: url(images/footer.png) no-repeat;
    background-size: cover;
    z-index: 8;
}

.footer a {
    color: #333;
}

@media screen and (max-width: 1024px) {
    .logo-box {
        font-size: 2rem;
    }
    .logo-btn a {
        font-size: 2rem;
    }
    .box {
        font-size: 4rem;
    }
    .banner {
        width: 80%;
        position: relative;
        margin-top: 2rem;
    }
}

@media screen and (max-width: 900px) {
    .logo-btn a {
        font-size: 1.6rem;
        margin-right: 0;
    }
    .box {
        font-size: 4rem;
    }
    .banner {
        position: relative;
        margin-top: 2rem;
    }
}

@media screen and (max-width: 640px) {
    header {
        padding: 0 5%;
        width: 90%;
    }
    .logo-box {
        font-size: 1.6rem;
    }
    .logo-btn {
        width: 50%;
        margin-left: 10%;
    }
    .logo-btn a {
        font-size: 1.4rem;
        margin-right: 0;
        display: block;
    }
    .logo-btn a:first-child {
        margin-right: 0;
    }
    .box {
        font-size: 2rem;
    }
    .banner {
        position: relative;
        margin-top: 2rem;
    }
    .footer {
        font-size: 1.4rem;
    }
}