.code-container {
 display: flex;
 width: 100%;
 }
 .line-numbers {
 width: 40px;
 padding: 10px;
 background-color: #f5f5f5;
 border: 1px solid #ddd;
 border-right: none;
 text-align: right;
 font-family: monospace;
 line-height: 1.5;
 color: #888;
 }
 textarea {
 flex: 1;
 font-family: monospace;
 line-height: 1.5;
 padding: 10px;
 border: 1px solid #ddd;
 border-left: none;
 }
 .backlight {
 background-color: #ffcc00 !important;
 border: 2px solid #ff4500 !important;
 }
 label:nth-child(odd){font-weight: bold}