.sign_problem{background:url(../../ch12/images/12_03_problem_bkg.png) no-repeat top left;-webkit-background-size:cover;-moz-background-size:cover;-o-background-size:cover;background-size:cover}.solved_problems_counter .label-default{color:#467e7e}.sign_problem .tryone_controlls .attempts .label-default{background-color:#fc6;border:1px dotted #e0b258;color:#fff}.sign_problem .tryone_controlls .label-success{background-color:#c78a0f;color:#fff}.sign_problem .tryone_controlls .attempts{color:#e0b258}.sign_problem .input-group-addon{background-color:#c78a0f;color:#fff}.sign_problem .has-success .input-group-addon{color:#3c763d;border-color:#3c763d;background-color:#dff0d8}.sign_problem .has-error .input-group-addon{color:#a94442;border-color:#a94442;background-color:#f2dede}.m12_03_feedbak{border:2px solid #fff;border-radius:25px;background:#369;padding:20px;color:#add9d9;clear:both}