html, body {
    padding: 0;
    margin: 0;
}

.page {
    width: 100%;
    flex-direction: column;
    display: flex; 
    align-items: center;
}

.header {
    width: 100%;
    height: 80px;
    padding-left: 300px;
    box-sizing: border-box;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
}

.header .menu a {
    font-size: 16px;
    color: #000;
    text-decoration: none;
}

.header .menu span {
    margin-left: 15px;
    margin-right: 15px;
}

.banner {
    width: 100%;
}

.banner img{
    width: 100%;
}

.content {
    width: 900px;
}

.content h2 {
    text-align: center;
    margin-top: 60px;
}

.content p {
    text-indent: 2em;
    line-height: 1.8em;
    font-size: 14px;
}

.content .img {
    justify-content: center;
    text-align: center;
}

.footer {
    width: 100%;
    background-color: #313131;
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 50px;
}

.contact_subject {
    text-align: center;
}

.contact_content {
    display: flex;
    flex-direction: row;
    font-size: 14px;
    align-items: center;
    width: 600px;
    justify-content: space-between;
}
.contact_content div {
    display: flex;
    flex-direction: row;
    font-size: 14px;
    align-items: center;
}
.contact_content img {
    margin-right: 8px;
}

.copyright {
    font-size: 14px;
    text-align: center;
    color: #D1D1D1;
    margin-top: 20px;
}

.copyright a {
    color: #D1D1D1;
    text-decoration: none;
}

.download {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
}

.download-item {
    width: 400px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.download-item .img {
    margin-top: 15px;
    margin-bottom: 30px;
}

.download-item .img img {
    width: 196px;
    height: 196px;
    border-radius: 24px;
    border: 1px solid #eeeeee;
}

.download-item a {
    width: 300px !important;
    display: flex;
    flex-direction: row;
    align-items: center;
    width: 80%;
    margin: 20px auto;
    color: #fff;
    height: 50px;
    line-height: 50px;
    text-align: center;
    text-decoration: none
}

.download-item .info {
    width: 300px;
    text-indent: 2em;
    line-height: 1.8em;
    font-size: 16px;
}

.download-item a img {
  width: 24px;
  height: 30px;
  margin: 10px;
}

a.ios {
  background-color: #000000;
}

a.android {
  background-color: #A5C845;
}


@media (max-width: 600px){
    .header{
        padding-left: 60px;
    }
    .download{
        flex-direction: column;
    }
    .download-item{
        width: 100%;
    }
    .content{
        width: 100%;
    }
    .contact_content{
        width: 100%;
        flex-direction: column;
        align-items: inherit;
    }
}