.colleft{padding-right:50px;}
.colright{padding-left:50px;}
.full_screen_pic .content .line2 {width: 100px;margin: 20px 0;border-bottom: 7px solid #c72bd3;opacity: 1;}
.numberbig:first-letter{font-size:56px;font-weight:bold;line-height:50px;}

.nb{
    filter: grayscale(100%);
    -webkit-filter: grayscale(100%);
    -moz-filter: grayscale(100%);
    -ms-filter: grayscale(100%);
    -o-filter: grayscale(100%);
}

.nb:hover{
    filter: grayscale(0%);
    -webkit-filter: grayscale(0%);
    -moz-filter: grayscale(0%);
    -ms-filter: grayscale(0%);
    -o-filter: grayscale(0%);
}