/* 重置浏览器默认样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html, body {
    height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: #333;
    background-color: #f5f5f5;
}

a {
    text-decoration: none;
    color: inherit;
}

ul, ol {
    list-style: none;
}

button, input, select, textarea {
    font-family: inherit;
    font-size: 100%;
    outline: none;
    border: none;
    background: none;
}

img {
    max-width: 100%;
    height: auto;
    vertical-align: middle;
    border: 0;
}

:focus {
    outline: none;
}

/* 清除浮动 */
.clearfix:after {
    content: "";
    display: block;
    clear: both;
    visibility: hidden;
    height: 0;
}