buttons style : demo 210

                        

                            

                                

                                    
                                        button
                                    
                                
                            
                        
                    

                    .btn{
                        color: #fff;
                        background-color: #B33771;
                        font-family:'Archivo', sans-serif;
                        font-size: 18px;
                        font-weight: 700;
                        text-transform: uppercase;
                        letter-spacing: 1px;
                        padding: 6px 15px;
                        border-radius: 0;
                        position: relative;
                        z-index: 1;
                        transition: all 0.5s ease;
                    }
                    .btn:focus,
                    .btn:hover{
                        color: #B33771;
                        background: transparent;
                    }
                    .btn:before{
                        content: "";
                        width: 100%;
                        height: 100%;
                        border: 2px solid #B33771;
                        transform: translateX(-50%) translateY(-50%);
                        position: absolute;
                        top: 50%;
                        left: 50%;
                        z-index: -1;
                        transition: all 0.7s ease;
                    }
                    .btn:hover:before{
                        width: calc(100% - 5px);
                        height: calc(100% - 5px);
                        border-radius: 30px;
                    }
                    @media only screen and (max-width: 767px){
                        .btn{ margin-bottom: 30px; }
                    }