.header_top{
    background: #000;
    color:#fff;
}
.font-white{
    color:white;
}
.header_logo_img{
    width:160px;
}
.header_big_font{
    font-size:4rem;
}
.text_left{
    text-align:left;
}
.header_slider_btn{
    letter-spacing: 7px;
    font-size: 3em;
    font-weight: 500;
    color: #fff;
    margin-bottom: 0.7em;
    padding: 10px 35px;
    display: inline-block;
    background: #168eea;
    
}
.active-color{
    color:white;
}