/*
Font: font-family: 'Conv_Lato-Regular',Sans-Serif; font-family: 'Conv_Lato-Bold',Sans-Serif; font-family: 'Conv_Lato-Light',Sans-Serif;
*/
body {text-decoration: none;margin: 0px;padding: 0px; background-color:#ebebeb; font-family:'Calibri';}
h1,h2,h3,h4,h5,h6,p,a,img,header,section,footer,ul,li{ padding:0px; margin:0px; border:0px; text-decoration:none;}
.blacktxt{ color:#000;}
.redtxt{ color:#900;}
.pad7{ padding:0px 7px;}
<!--Tab Css Start-->
.comtab {margin: 0px auto;}
.comtab h1 {margin:33px 0 25px;}
.comtab h3 {margin: 10px 0;}
pre {background: #fff;}
@media only screen and (max-width: 780px) {
.comtab {margin: 5%;width: 90%;}
.how-use {float: left;width: 300px;display: none;}
}
ul.resp-tabs-list, p {margin: 0px;padding: 0px; margin-left:10px;}
.resp-tabs-list li {font-weight: normal;font-size: 16px; font-family:Calibri; display: inline-block;padding: 13px 15px; margin: 0;list-style: none;cursor: pointer;float: left;}
.resp-tabs-container {padding: 0px;background-color: #f4f4f4;clear: left; width:100%;}
h2.resp-accordion {cursor: pointer;padding: 5px;display: none;}
.resp-tab-content {display: none;padding: 15px;}
.resp-tab-active {border: 1px solid #c1c1c1;border-bottom: none;margin-bottom: -1px !important;padding: 12px 14px 14px 14px !important;}
.resp-tab-active {border-bottom: none;background-color: #f4f4f4;}
.resp-content-active, .resp-accordion-active {display: block;}
.resp-tab-content {border: 1px solid #c1c1c1;border-bottom: none;}
h2.resp-accordion {font-size: 13px;border: 1px solid #c1c1c1;border-top: 0px solid #c1c1c1;margin: 0px;padding: 10px 15px;}
h2.resp-tab-active {border-bottom: 0px solid #c1c1c1 !important;margin-bottom: 0px !important;padding: 10px 15px !important;}
h2.resp-tab-title:last-child {border-bottom: 12px solid #c1c1c1 !important;background: blue;}
/*-----------Accordion styles-----------*/
h2.resp-tab-active {background: #DBDBDB !important;}
.resp-easy-accordion  h2.resp-accordion {display: block;}
.resp-easy-accordion .resp-tab-content {border: 1px solid #c1c1c1;}
.resp-easy-accordion .resp-tab-content:last-child {border-bottom: 1px solid #c1c1c1 !important;}
.resp-jfit {width: 100%;margin: 0px;}
.resp-tab-content-active {display: block;}
h2.resp-accordion:first-child {border-top: 1px solid #c1c1c1 !important;}

/*Here your can change the breakpoint to set the accordion, when screen resolution changed*/
@media only screen and (max-width: 768px) {
ul.resp-tabs-list {display: none;}
h2.resp-accordion {display: block;}
.resp-vtabs .resp-tab-content {border: 1px solid #C1C1C1;}
.resp-vtabs .resp-tabs-container {border: none;float: none;width: 100%;clear: none;}
.resp-accordion-closed {display:none !important;}
.resp-vtabs .resp-tab-content:last-child {border-bottom: 1px solid #c1c1c1 !important;}
}

a.underline
{
    background-color: #FECA00;
    background-image: url('../images/ico/print.png');
    background-repeat: no-repeat;
    border-color: #1978ab;
    color: #000;
     -moz-user-select: none;
    border: 1px solid transparent;
    border-radius: 3px;
    cursor: pointer;
    display: inline-block;
    font-size: 12px;
    font-weight: bold;
    line-height: 1.42857;
    margin-bottom: 0;
    padding: 5.4px 13px;
    padding-left:30px;
    text-align: center;
    touch-action: manipulation;
    vertical-align: middle;
    white-space: nowrap;
    text-decoration:none;
}
<!--Tab Css End-->