.header{text-align:center;margin-bottom:40px}h1{font-size:24px}.hide_result{display:none}.w-25{width:25%!important}.w-50{width:50%!important}.w-75{width:75%!important}.w-100{width:100%!important}.btn-submit{background-color:#5cb85c;color:white;border:none;padding:10px 20px;border-radius:4px;cursor:pointer;width:100%;display:block}.btn-submit:hover{background-color:#449d44}.column.full{width:100%}@media (max-width:768px){.column{width:100%;margin-bottom:20px}}