Connection!

As soon as the dots and lines are collected on one playing field, a puzzle is invariably created and this time it has a specific name - Connection! It has three hundred levels, which means you will have a lot of time for a pleasant rest. However, you will be relatively rested; your brain must work to solve the puzzle at each level and move on to the next. The task is to connect all the dots. In fact, they are already connected, but you must draw your rainbow-colored lines along the connecting lines. Please note that each connection line can only be used once in Connection!