body,
html {
    width: 100%;
    max-width: 640px;
    margin: 0 auto;
    padding: 0;
    box-sizing: border-box;
}

img {
    width: 100%;
    height: auto;
    display: block;
}

section {
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

header {
    width: 100%;
    text-align: center;
    cursor: pointer;
}

.bg-img {
    width: 100%;
    text-align: center;
}

.header-style {
    text-align: center;
    color: #8e9397;
    font-size: 13px;
}

.header-style p {
    line-height: 20px;
    font-size: 13px;
}

.header-style a {
    color: #62a2ec;
    text-decoration: underline;
}