body {
                    margin: 0;
                    padding: 0;
                    background-color: #222;
                }
                
                .nima{
                    position: relative;
                    margin: 200px auto 0;
                    width: 400px;
                    height: 250px;
                    background-image: linear-gradient(0deg, #000, #262626);
                    font-size: 21px;
                    color: aliceblue;
                    text-align: center;
                    line-height:220px;
                }
                
                .nima{
                    position: relative;
                    margin: 200px auto 0;
                    width: 400px;
                    height: 250px;
                    background-image: linear-gradient(0deg, #000, #262626);
                    font-size: 21px;
                    color: aliceblue;
                    text-align: center;
                    line-height:220px;
                }
                .nima:before,
                .nima:after {
                    content: '';
                    position: absolute;
                    top: -2;
                    left: -2;
                    background-size: 400%;
                    background-image: linear-gradient(45deg, #fb0094, #0000ff, red, blue, #fb0094, #0000ff, red, blue);
                    width: calc(100% + 4px);
                    height: calc(100% + 4px);
                    z-index: -1;
                    animation: gradientBG 40s ease infinite;
                }
                
                .nima:after {
                    filter: blur(20px);
                }
                
                @keyframes gradientBG {
                    0% {
                        background-position: 0 0;
                    }
                    50% {
                        background-position: 400% 0;
                    }
                    100% {
                        background-position: 0 0;
                    }