.button01_css{
     background-image: url(data/image/new_game_01.png);

}
.button01_css:hover{
     background-image: url(data/image/new_game_02.png);

}
.button02_css{
     background-image: url(data/image/load_game_01.png);

}
.button02_css:hover{
     background-image: url(data/image/load_game_02.png);

}

.button03_css{
     background-image: url(data/image/Camera_MC_notebook.png);

}
.button03_css:hover{
     background-image: url(data/image/Camera_MC_over_notebook.png);

}