Checkbox style : demo 6

                        .checkbox{
                            width: 64px;
                            height: 31px;
                            margin: 0 auto;
                        }
                        .checkbox input[type=checkbox]{
                            margin: 0;
                            visibility: hidden;
                            left: 7px;
                            top: 7px;
                        }
                        .checkbox label{
                            height: 100%;
                            border-radius: 4px;
                            display: block;
                            perspective: 100px; 
                            position: relative;
                            z-index: 1;
                        }
                        .checkbox label:before,
                        .checkbox label:after{
                            content: 'Nope';
                            color: #fff;
                            background: #ce1212;
                            font-size: 16px;
                            font-weight: bold;
                            text-align: center;
                            width: 100%;
                            height: 100%;
                            padding: 5px 0;
                            border-radius: 4px;
                            transform: rotateY(0deg);
                            position: absolute;
                            top: 0;
                            left: 0;
                            transition: all 0.4s ease;
                        }
                        .checkbox label:after{
                            content: 'Yeah';
                            background: #588101;
                            transform: rotateY(-180deg);
                            left: 0;
                            z-index: -1;
                        }
                        .checkbox input[type=checkbox]:checked+label:before{ transform: rotateY(180deg); }
                        .checkbox input[type=checkbox]:checked+label:after{
                            transform: rotateY(0deg);
                            z-index: 1; 
                        }
                        @media only screen and (max-width:767px){
                            .checkbox{ margin: 0 0 20px; }
                        }