body {
    font-family: 'Helvetica', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}
.container {
    width: 100%;
    margin: auto;
    overflow: hidden;
}
.write{
    margin-top: -20px;
    margin-left: 10px;
}
header {
    background: #333;
    color: #fff;
    padding-top: 30px;
    min-height: 70px;
    border-bottom: #e8491d 3px solid;
}
#search{
    width: 100%;
    height: 60px;
    border-radius: 10px;
}
header a {
    color: #fff;
    text-decoration: none;
    text-transform: uppercase;
    font-size: 16px;
}
header ul {
    padding: 0;
    list-style: none;
}
header li {
    float: left;
    display: inline;
    padding: 0 10px 0 10px;
}
header #branding {
    float: left;
}
header #branding h1 {
    margin: 0;
}
li{
    font-size: 10px;
}
header nav {
    float: right;
    margin-top: 10px;
    margin-left: 5px;
}
header .highlight, header .current a {
    color: #e8491d;
    font-weight: bold;
}
header a:hover {
    color: #ffbb00;
    font-weight: bold;
}
.bu{
    margin-top: 20px;
    margin-left: 5%;
    margin-right: 5%;
}
.honbun{
    margin-left: 5%;
    font-size: 20px;
}
.sel{
    margin-top: 10px;
    height: 60px;
    width: 100%;
    border: solid;
    border-radius: 10px;
    /* margin-left: 0%; */
}
.sel:hover{
    background-color: #000;
    color: #fff;
}
.tx{
    padding-top: 5px;
    margin-left: 10px;
    margin-top: 0px;
    text-decoration:underline;
    margin-bottom: 0px;
    font-size: 24px;
}
.next{
    height: 50px;
    width: 50px;
}
.page{
    text-align: center;
}
h1{
    padding-left: 20%;
    width: 100%;
}
.set{
    margin-top: -4px;
    text-align: right;
    margin-right: 10px;
    margin-bottom: 0px;
}
.code{
    background-color: black;
    color: white;
    padding-top: 10px;
    padding-left: 10px;
    padding-bottom: 10px;
    overflow-x: scroll;
    font-family:cursive,sans-serif;
}
.sum{
    padding: 7px;
    margin-bottom: 5px;
    display: flexbox;
    bottom: 0px;
}
.sum2{
    padding: 14px;
    margin-bottom: 5px;
    display: flexbox;
    bottom: 0px;
}