自定义 resetCSS

body, h1, h2, h3, h4, h5, h6, p, ul, li, ol, dl, dd, fieldset, legend, button, input, textarea, th, td {
    padding: 0;
    margin: 0;
}

html {
    font-family: "微软雅黑";
    font-size: 12px;
    background-color: #eeeeee;
}

.clear:after {
    content: "";
    display: block;
    clear: both;
    height: 0;
    visibility: hidden;
    overflow: hidden;
}

.clear {
    zoom: 1;
}

li {
    list-style: none;
}

a {
    text-decoration: none;
}

img {
    vertical-align: top;
    border: 0
}

input, select, button, textarea {
    outline: none;
}

textarea {
    resize: none;
}

input[type='button'], input[type='submit'], input[type='file'] {
    cursor: pointer;
}

input::-webkit-input-placeholder {
    /* Webkit browsers */
    color: #ddd;
}

input:-moz-placeholder {
    /* Mozilla Firefox 4 to 18 */
    color: #ddd;
}

input::-moz-placeholder {
    /* Mozilla Firefox 19+ */
    color: #ddd;
}

input:-ms-input-placeholder {
    /* Internet Explorer 10+ */
    color: #ddd;
}