* {
    padding: 0;
    margin: 0;
    user-select: none;
}

html, body {
    background-color: #ccc;
}

li {
    list-style: none;
}

a {
    display: inline-block;
    text-decoration: none;
    color: inherit;
    user-select: none;
} a:hover {
    color: #08c;
}

.show {
    width: 1000px;
    border-radius: 10px;
    background-color: #fff;
    margin: 50px auto;
    padding: 30px 0;
}

.header {
    width: 100%;
    height: 150px;
    line-break: 50px;
    text-align: center
} .header img {
    width: 100px;
} .header span {
    font-size: 24px;
    font-weight: 500;
}

.content {
    width: 100%;
    margin-top: 50px;
    text-align: center;
} .content li {
    line-height: 1.8;
    font-size: 18px;
}

.footer {
    margin-top: 50px;
    width: 100%;
    height: 50px;
    line-height: 50px;
    text-align: center;
} .footer span {
    font-size: 16px;
}