preloader style : demo 286

                        .loader{
                            background-color: #fff;
                            width: 145px;
                            height: 80px;
                            margin: 50px auto 0;
                            border-radius: 10px;
                            box-shadow: 0 0 15px rgba(0,0,0,0.2);
                            position: relative;
                        }
                        .loader .inner_loader{
                            background-color: #EA2027;
                            width: 10px;
                            height: 20px;
                            position: absolute;
                            left: 15px;
                            bottom: 15px;
                            animation: loader 1.5s ease-out infinite;
                        }
                        .loader .inner_loader:nth-child(2){
                            left: 30px;
                            animation-delay: 0.4s;
                        }
                        .loader .inner_loader:nth-child(3){
                            left: 45px;
                            animation-delay: 0.8s;
                        }
                        .loader .inner_loader:nth-child(4){
                            left: 60px;
                            animation-delay: 1.2s;
                        }
                        .loader .inner_loader:nth-child(5){
                            left: 75px;
                            animation-delay: 0.6s;
                        }
                        .loader .inner_loader:nth-child(6){
                            left: 90px;
                            animation-delay: 0.4s;
                        }
                        .loader .inner_loader:nth-child(7){
                            left: 105px;
                            animation-delay: 1s;
                        }
                        .loader .inner_loader:nth-child(8){
                            left: 120px;
                            animation-delay: 0.8s;
                        }
                        @keyframes loader{
                            0%{
                                background-color: #EA2027;
                                height: 30px;
                            }
                            15%{
                                height: 40px;
                                background-color: #b71540;
                            }
                            35%{
                                background-color: #3742fa;
                                height: 50px;
                            }
                            45%{
                                background-color: #009432;
                                height: 40px;
                            }
                            75%{
                                background-color: #EE5A24;
                                height: 30px;
                            }
                            100%{
                                background-color: #EA2027;
                                height: 20px;
                            }
                        }