#main {
    text-align: center;
    margin: auto;
}
h2 {
    color: #808080;
}
.setting-area {
    width: 870px;
    color: #3a87ad;
    border-color: #bce8f1;
    background-color: #D7EEFF;
    border: 1px solid #bce8f1;
    padding: 30px;
    margin: 20px auto;
    line-height: 30px;
}

.btn {
    color: #ffffff;
    background-color: #337ab7;
    border-color: #2e6da4;
    width: 60px;
}
.radio {
    margin-right: 8px;
}
.header-row {
    border-right: 2px dotted #337ab7;
    margin-right: 20px;
}