.devider{
    position: relative;
    width: 100%;
    height: 0;
}
.devider .devider-inside{
    position: absolute;
    z-index: 9;
    left: 0;
    width: 100%;
}
.devider.devider-top .devider-inside{
    top: 0;
}
.devider.devider-bottom .devider-inside{
    bottom: 0;
}