Checkbox style : demo 17

                        .checkbox{ display: inline-block; }
                        .checkbox input[type=checkbox]{
                            margin: 0;
                            visibility: hidden;
                            left: 1px;
                            top: 1px;
                        }
                        .checkbox label{
                            background-color: #d55050;
                            width: 50px;
                            height: 26px;
                            cursor: pointer;
                            border-radius: 5px;
                            box-shadow: inset 0px 4px 0px 0px rgba(0, 0, 0, 0.2);
                            transition: all 0.5s ease 0s;
                        }
                        .checkbox label:before{
                            content: "";
                            background-color: #fafafa;
                            width: 20px;
                            height: 17px;
                            border-radius: 4px;
                            box-shadow: 0px 3px 0px 0px #d2d2d2;
                            position: absolute;
                            top: 3px;
                            left: 3px;
                            transition: all 0.25s;
                        }
                        .checkbox input[type=checkbox]:checked+label{ background-color: #25c686; }
                        .checkbox input[type=checkbox]:checked+label:before{ left: 27px; }
                        @media only screen and (max-width:767px){
                            .checkbox{ margin: 0 0 20px; }
                        }