.text_about{margin-top:1.5%;font-size:16px}.sub_header2{margin-top:3%}h3{margin-top:15px;margin-bottom:15px}@media only screen and (min-width:768px)and (max-width:1024px){.txt_center{width:55%}}@media only screen and (max-width:414px){.txt_center{width:90%;top:120px}}