Checkbox style : demo 10

                        .checkbox{ display: inline-block; }
                        .checkbox input[type=checkbox]{
                            margin: 0;
                            visibility: hidden;
                            left: 1px;
                            top: 1px;
                        }
                        .checkbox label{
                            width: 46px;
                            height: 25px;
                            margin: 0;
                            border: 3px solid #214252;
                            border-radius: 100px;
                            cursor: pointer;
                            overflow: hidden;
                            position: relative;
                            transition: 0.5s ease;
                        }
                        .checkbox label:before,
                        .checkbox label:after{
                            content: '';
                            background: #184d47;
                            border-radius: 50%;
                            width: 15px;
                            height: 15px;
                            position: absolute;
                            top: 2px;
                            left: 2px;
                            transition: all 0.3s;
                        }
                        .checkbox label:after{
                            background: #fff;
                            left: auto;
                            right: -100px;
                        }
                        .checkbox input[type=checkbox]:checked+label{ background-color: #184d47; }
                        .checkbox input[type=checkbox]:checked+label:before{ left: -100px; }
                        .checkbox input[type=checkbox]:checked+label:after{ right: 2px; }
                        @media only screen and (max-width:767px){
                            .checkbox{ margin: 0 0 20px; }
                        }