buttons style : demo 48

CSS

                        .btn{
                            color: #333;
                            border-radius: 3px;
                            text-transform: uppercase;
                            overflow: hidden;
                            position: relative;
                            padding: 0;
                            -webkit-transform: translateZ(0);
                            transform: translateZ(0);
                            transition: all 0.3s ease 0s;
                        }
                        .btn:hover{ color: #fff; }
                        .btn span{
                            display: block;
                            border-radius: 0;
                            position: relative;
                        }
                        .btn:before{
                            left: 0;
                        }
                        .btn:after{
                            left: 75%;
                        }
                        .btn span:before{
                            left: 25%;
                        }
                        .btn span:after{
                            left: 50%;
                        }
                        .btn:before,
                        .btn:after,
                        .btn span:before,
                        .btn span:after{
                            content: "";
                            width: 26%;
                            height: 100%;
                            position: absolute;
                            top: 0;
                            z-index: -1;
                            -webkit-transform: translateY(100%);
                            transform: translateY(100%);
                            -webkit-transition: all 0.25s ease;
                            transition: all 0.25s ease;
                        }
                        .btn:hover:before,
                        .btn:hover:after,
                        .btn:hover span:before,
                        .btn:hover span:after{
                            -webkit-transform: translateY(0%);
                            transform: translateY(0%);
                        }
                        .btn:hover:before{
                            -webkit-transition-delay: 0s;
                            transition-delay: 0s;
                        }
                        .btn:hover:after{
                            -webkit-transition-delay: 0.15s;
                            transition-delay: 0.15s;
                        }
                        .btn:hover span:before{
                            -webkit-transition-delay: 0.1s;
                            transition-delay: 0.1s;
                        }
                        .btn:hover span:after{
                            -webkit-transition-delay: 0.05s;
                            transition-delay: 0.05s;
                        }
                        .btn.red:before,
                        .btn.red:after,
                        .btn.red span:before,
                        .btn.red span:after{
                            background: #fe6d6d;
                        }
                        .btn.blue:before,
                        .btn.blue:after,
                        .btn.blue span:before,
                        .btn.blue span:after{
                            background: #5bbbf5;
                        }
                        .btn.orange:before,
                        .btn.orange:after,
                        .btn.orange span:before,
                        .btn.orange span:after{
                            background: #ee955b;
                        }
                        .btn.green:before,
                        .btn.green:after,
                        .btn.green span:before,
                        .btn.green span:after{
                            background: #79d799;
                        }
                        @media only screen and (max-width: 767px){
                            .btn{ margin-bottom: 20px; }
                        }
                    
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