preloader style : demo 171

HTML

                        

CSS

                        .loader{ overflow: hidden; }
                        .loader .loader-inner{
                            width: 260px;
                            height: 260px;
                            background: #77379a;
                            border-radius: 100% 0 100% 0;
                            padding: 15px;
                            margin: 64px auto;
                            box-sizing: border-box;
                            position: relative;
                            animation: loading-1 10s linear forwards infinite;
                        }
                        .loader .loader-inner:before{
                            content: "";
                            background: #fff;
                            border-radius: 0 100% 0 100%;
                            position: absolute;
                            top: 0;
                            left: 0;
                            bottom: 0;
                            right: 0;
                        }
                        .loader .loader-inner > .loader-inner{
                            width: 100%;
                            height: 100%;
                            margin: 0;
                        }
                        @keyframes loading-1{
                            0%{ transform: rotate(0deg); }
                            100%{ transform: rotate(360deg); }
                        }
                    
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