.c-float{
    margin-top: 20px;
    float: right;
}
.c-float,
.c-float__content{
    width: 300px;
}
.c-float_state_fixed .c-float__content{
    position: fixed;
    top: 0;
    margin-top: 50px;
}
.c-float_state_absolute .c-float__content{
    position: absolute;
    bottom: 0;
}