* {
    padding: 0;
    margin: 0;
}

body {
    background: #eeeeee;
}

section{
    margin-top: 20px;
    color: #000000;
}

.control {
    width: 1075px;
    height: auto;
    margin: 0 auto;
    background: #eeeeee;
    color: #000000;
}

.left,
.subcontent {
    height: auto;
    margin: 20px 5px;
}

.left {
    width: 200px;
    display: inline-block;
    vertical-align: top;
    position: sticky;
    top: 50px;
}

.subNav {
    height: auto;
    background-color: white;
    padding: 10px;
    width: 180px;
    position: sticky;
    top: 50px;
}

.subcontent {
    width: 800px;
    background-color: white;
    display: inline-block;

}

.part {
    text-align: center;
    line-height: 60px;
    border-bottom: 1px solid #d9d9d9;
    border-radius: 5px;
    color: #000000;
}

a {
    text-decoration: none;
    color: black;
    display: block;
}

.part:hover {
    background: #eeeeee;
    cursor: pointer;
}

.part4 {
    border: none;
}

/* .text {
    line-height: 30px;
    width: 80%;
    margin: 25px auto;
    height: auto;
    min-height: 500px;
}

.container2,
.container4 {
    background: #e5e5e5;
    overflow: hidden;
}

.title {
    line-height: 40px;
} */