.sub_container{height: 500px; overflow: scroll;}
.chap1{margin-left: 20px;}
.chap2{margin-left: 40px;}
.chap3{margin-left: 60px;}
.chap4{margin-left: 80px;}
.chap5{margin-left: 100px;}
.chap6{margin-left: 300px;}
.wid600{width: 600px;}

.mgb15 {
    margin-bottom: 15px !important;
}

.stit_area {
    position: relative;
    margin-bottom: 15px;
}

.stit_area .btn {
    position: absolute;
    right: 0;
    top: -3px;
}

.btn_normal {
    display: inline-block;
    line-height: 150%;
    margin: 0;
    padding: 0;
    color: #606060;
    text-align: center;
    vertical-align: middle;
    background: #fff;
    border: 1px solid #d6d6d6;
    letter-spacing: -0.5px;
    border-radius: 2px;
    cursor: pointer;
    font-weight: normal;
    letter-spacing: -0.8px;
    transition: all .25s ease;
}

.btn_normal span {
    display: block;
    padding: 9px 15px 8px;
    font-size: 13px;
}

.btn_normal.small span {
    padding: 5px 12px 6px;
}

.btn_normal.ico_r span {
    padding-right: 12px;
}

[class^="xi-"], [class*=" xi-"] {
    font-family: 'xeicon' !important;
    display: inline-block;
    speak: none;
    font-style: normal;
    font-weight: normal;
    font-variant: normal;
    text-transform: none;
    line-height: 1;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.btn_normal i {
    font-size: 14px;
    vertical-align: middle;
    margin-top: -2px;
}

.btn_normal.ico_r i {
    margin-left: 2px;
}

.xi-download:before {
  content: "\eb7c";
}