.fnt_16{font-size:16px;}
.fnt_18{font-size:18px;}
.fnt_20{font-size:20px;}
.fnt_24{font-size:24px;}
.fnt_30{font-size:30px;}
.fnt_36{font-size:36px;}
.fnt_48{font-size:48px;}
.fnt_60{font-size:60px;}
.fnt_72{font-size:72px;}

@media only screen and (max-width: 1599px){
    .fnt_16{font-size:14px;}
    .fnt_20{font-size:18px;}
    .fnt_24{font-size:22px;}
    .fnt_30{font-size:28px;}
    .fnt_36{font-size:34px;}
    .fnt_48{font-size:40px;}
    .fnt_60{font-size:52px;}
    .fnt_72{font-size:62px;}
}
@media only screen and (max-width: 1399px){
    .fnt_18{font-size:16px;}
    .fnt_20{font-size:16px;}
    .fnt_24{font-size:20px;}
    .fnt_30{font-size:26px;}
    .fnt_36{font-size:30px;}
    .fnt_48{font-size:36px;}
    .fnt_60{font-size:46px;}
    .fnt_72{font-size:52px;}
}
@media only screen and (max-width: 1279px){
    .fnt_24{font-size:18px;}
    .fnt_30{font-size:24px;}
    .fnt_36{font-size:28px;}
    .fnt_48{font-size:30px;}
    .fnt_60{font-size:40px;}
    .fnt_72{font-size:42px;}
}
@media only screen and (max-width: 1023px){
    .fnt_18,.fnt_20{font-size:14px;}
    .fnt_24{font-size:16px;}
    .fnt_30{font-size:20px;}
    .fnt_36{font-size:24px;}
    .fnt_48{font-size:28px;}
    .fnt_60{font-size:30px;}
    .fnt_72{font-size:32px;}
}

@media only screen and (max-width: 767px){
    .fnt_24{font-size:14px;}
    .fnt_30{font-size:16px;}
    .fnt_36{font-size:18px;}
    .fnt_48{font-size:22px;}
    .fnt_60{font-size:24px;}
    .fnt_72{font-size:30px;}
}