* {
    margin: 0;
    padding: 0;
}
body {
    background-color: #F5F5DC;
}
div#header {
    padding: 5px;
    max-width: 840px;
    margin: auto;
}
/* 声明清除浮动的样式 */
.clearfix:before,
.clearfix:after {
    content: "";
    display: table;
}
.clearfix:after {
    clear: both;
}
.clearfix {
    *zoom: 1; /* IE6、IE7专门清除浮动样式 */
}
div#example {
    float: left;
    height: 20px;
    line-height: 20px;
    font-size: 16px;
    background-color: transparent;
    color: black;
}
select#example_select {
    font-size: 14px;
    border-radius: 8px;
    margin: 2px;
    padding: 2px;
    background-color: white;
    border: black solid 1px;
    color: black;
}
div#change_style {
    background-color: white;
    border: black solid 2px;
    border-radius: 21px;
    cursor: pointer;
    float: right;
}
div#switch {
    float: left;
    color: white;
    background-color: black;
    /* border: white solid 2px; */
    margin: 1px;
    border-radius: 50%;
    line-height: 16px;
    font-size: 10px;
    width: 16px;
    height: 16px;
    text-align: center;
    margin-left: 16px;
}
div.container {
    max-width: 840px;
    background-color: #F5F5DC;
    color: black;
    margin: auto;
    padding: 10px;
    font-size: 16px;
    font-family: "Microsoft Yahei", Arial, sans-serif;
}
div.input-div,
div#content,
input#generate_btn {
    color: black;
    font-weight: 400;
    background-color: transparent;
    display: inline-block;
    border: gray solid 1px;
    border-radius: 5px;
    min-width: 50px;
    padding-left: 2px;
    padding-right: 2px;
    margin-top: 1px;
    margin-bottom: 1px;
    transition: color 0.3s ease,
                background-color 0.3s ease,
                border-color 0.3s ease;
}
div.input-div:focus,
div#content:focus {
    font-weight: 700;
    border: #0092fa solid 2px;
    padding-left: 1px;
    padding-right: 1px;
    margin-top: 0px;
    margin-bottom: 0px;
	outline:none;
}
div.input-div:hover,
div#content:hover,
input#generate_btn:hover {
    background-color: #DEDEDE;
}
div.btn {
    text-align: center;
}
input#generate_btn {
    margin-top: 10px;
    margin-bottom: 10px;
    font-size: 20px;
    padding: 2px;
    color: black;
    border-width: 2px;
    cursor: pointer;
}
div#content {
    width: 100%;
    font-size: 16px;
    word-wrap: break-word;
    overflow-x: hidden;
    overflow-y: auto;
}
div.footer {
    color: gray;
    text-align: center;
}
div.footer>a {
    text-decoration: none;
    color: gray;
}