preloader style : demo 260

HTML

                        

CSS

                        .loader{
                            width: 78px;
                            height: 78px;
                            margin: 50px auto 0;
                            border: 4px solid #fff;
                            border-radius: 50%;
                            position: relative;
                            animation: animate 2.53s ease-in infinite alternate;
                        }
                        .loader:before,
                        .loader:after{
                            content: "";
                            width: 10px;
                            height: 10px;
                            border-radius: 100%;
                            border: 2px solid #fff;
                            transform: translateX(-50%)translateY(-50%);
                            position: absolute;
                            top: 50%;
                            left: 50%;
                            animation: animate_1 5.06s ease infinite alternate;
                        }
                        .loader:after{
                            background: #fff;
                            width: 19px;
                            height: 19px;
                            border: none;
                            transform: translate(0);
                            top: 0;
                            right: 13px;
                            animation: animate_2 2.53s ease-in infinite alternate;
                        }
                        @keyframes animate{
                            0%{
                                width: 78px;
                                height: 78px;
                                transform: rotate(0deg);
                            }
                            100%{
                                width: 10px;
                                height: 10px;
                                margin-top: 29px;
                                transform: rotate(1080deg);
                            }
                        }
                        @keyframes animate_1{
                            0%, 50%, 100%{
                                width: 10px;
                                height: 10px;
                                opacity: 0;
                            }
                            51%{ opacity: 1; }
                            70%{
                                width: 97px;
                                height: 97px;
                                opacity: 0;
                            }
                        }
                        @keyframes animate_2{
                            0%{
                                height: 19px;
                                width: 19px;
                            }
                            100%{
                                height: 3px;
                                width: 3px;
                                right: 0;
                            }
                        }
                    
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