base.css

/(1)清除默认样式/

html,
body,
ul,
li,
ol,
dl,
dd,
dt,
p,
h1,
h2,
h3,
h4,
h5,
h6,
form,
fieldset,
legend,
img,
input {
margin: 0;
padding: 0;
}

fieldset,
img,
input,
button {
border: 0 none;
padding: 0;
margin: 0;
outline-style: none;
}

/去掉input等聚焦时的蓝色边框/

ul,
li,
ol {
list-style: none;
}

select,
input {
vertical-align: middle;
}

/select, input, textarea { font-size:12px; margin:0; }/

textarea {
resize: none;
}

/防止拖动/

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

a,
a:hover,
a:link,
a:active,
a:visited {
text-decoration: none;
color: black;
}

h1,
h2,
h3,
h4,
h5,
h6 {
font-weight: normal;
font-size: 1em;
}

/设置h标签的大小，设置跟父亲一样大的字体font-size:100%;/

s,
i,
em {
font-style: normal;
text-decoration: none;
}

.fl {
float: left;
}

/*只要元素需要右浮动就给元素添加一个class名为fr */

.fr {
float: right;
}

.ac {
text-align: center;
}

.f12 {
font-size: 12px;
}

.f14 {
font-size: 14px;
}

.f16 {
font-size: 16px;
}

ul,
li,
div,
h1,
h2,
h3,
h4,
h5,
h6,
ol,
p {
box-sizing: border-box;
}

jquery-kq-nav-left.css

.nav-left-container {
background-color: #1c2b36;
position: fixed;
left: 0;
top: 0;
width: 220px;
height: 100%;
}

.nav-left-container li a {
font-size: 14px;
box-sizing: border-box;
cursor: pointer;
position: relative;
font-weight: 600;
padding: 15px 20px 15px 25px;
display: block;
color: #869fb1;
}

.nav-left-container .active {
border-left: 4px solid #19a9d5;
}

.nav-left-container li:hover {
background-color: #131e26;
}

.nav-left-container .active>a {
color: #ffffff;
}

.nav-left-container-small li a {
font-size: 12px;
padding: 7px 15px 7px 52px;
}

.nav-left-container-small {
display: none;
}

/* .active .nav-left-container-small {
display: block;
} */

jquery.min.js

/! jQuery v1.11.3 | (c) 2005, 2015 jQuery Foundation, Inc. | jquery.org/license /
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