@font-face{font-family:'Conv_Sukhumvit_set_Medium';src:url('../fonts/Sukhumvit_set_Medium.eot');src:local('☺'), url('../fonts/Sukhumvit_set_Medium.woff') format('woff'), url('../fonts/Sukhumvit_set_Medium.ttf') format('truetype'), url('../fonts/Sukhumvit_set_Medium.svg') format('svg');font-weight:normal;font-style:normal;}
@font-face{font-family:'Conv_SukhumvitSet-Light';src:url('../fonts/SukhumvitSet-Light.eot');src:local('☺'), url('../fonts/SukhumvitSet-Light.woff') format('woff'), url('../fonts/SukhumvitSet-Light.ttf') format('truetype'), url('../fonts/SukhumvitSet-Light.svg') format('svg');font-weight:normal;font-style:normal;}
@font-face{font-family:'Conv_Sukhumvit_set';src:url('../fonts/Sukhumvit_set.eot');src:local('☺'), url('../fonts/Sukhumvit_set.woff') format('woff'), url('../fonts/Sukhumvit_set.ttf') format('truetype'), url('../fonts/Sukhumvit_set.svg') format('svg');font-weight:normal;font-style:normal;}
@font-face{font-family:'Conv_THSARABUN';src:url('../fonts/THSARABUN.eot');src:local('☺'), url('../fonts/THSARABUN.woff') format('woff'), url('../fonts/THSARABUN.ttf') format('truetype'), url('../fonts/THSARABUN.svg') format('svg');font-weight:normal;font-style:normal;}
html , body{margin:0px;line-height:1.55;font-family:'Conv_SukhumvitSet-Light', Tahoma, sans-serif;color:#515151;font-size:14px;min-height:100%;}
body{background-color:#ffffff;}
input , textarea , select{font-family:'Conv_SukhumvitSet-Light', Tahoma, sans-serif;font-size:16px;padding:5px;line-height:20px;border:1px solid #535353;border-radius:5px;}
img{border:none;vertical-align:bottom}
a{color:#111;text-decoration:none;}
::-webkit-input-placeholder{color:#151d44;}
::-moz-placeholder{color:#151d44;}
:-ms-input-placeholder{color:#151d44;}
:-moz-placeholder{color:#151d44;}
a[href^="tel"]{color:inherit;text-decoration:none;}
.button6{
	background-color: #2d16c1;
    border: none;
    color: white;
    padding: 6px 32px;
    text-align: center;
    font-size: 16px;
    margin-left: 800px;
    cursor: pointer;
    border-radius: 12px;
     font-family: Arial, Helvetica, sans-serif;
     position: relative;
}
.button2{
	background-color: #2d16c1;
    border: none;
    color: white;
    padding: 6px 32px;
    text-align: center;
    font-size: 6px;
    margin-left: 779px;
    cursor: pointer;
    border-radius: 12px;
     font-family: Arial, Helvetica, sans-serif;
    position: relative;
    top: -41px;
}
.button3{
	background-color: #2d16c1;
    border: none;
    color: white;
    padding: 6px 32px;
    text-align: center;
    font-size: 16px;
    margin-left: 844px;
    cursor: pointer;
    border-radius: 12px;
     font-family: Arial, Helvetica, sans-serif;
     display: inline-block;
}
.button4{
	background-color: #2d16c1;
    border: none;
    color: white;
    padding: 6px 32px;
    text-align: center;
    font-size: 16px;
    margin-left: 779px;
    cursor: pointer;
    border-radius: 12px;
     font-family: Arial, Helvetica, sans-serif;
    position: relative;
    top: -57px;
}
.button5{background-color: #2d16c1;border: none;
	
    border: none;
    color: white;
    padding: 6px 32px;
    text-align: center;
    font-size: 16px;
    margin-left: 816px;
    cursor: pointer;
    border-radius: 12px;
     font-family: Arial, Helvetica, sans-serif;
     display: inline-block;
}
.box1{
    margin-bottom: 100px;
}
<!--h1, h2, h3, h4, h5, h6, p{margin:0px;padding:0px;}-->
p{padding:0;margin:0;}
.prompt-area{position:fixed;top:0px;left:0px;right:0px;bottom:0px;z-index:9999;text-align:center;display:none;}
.prompt-area > .prompt-bg{position:fixed;top:0px;left:0px;right:0px;bottom:0px;background-color:#000000;opacity:.8}
.prompt-area::before{content:'';height:100%;display:inline-block;vertical-align:middle;}
.prompt-area > .wrapper{text-align:left;background-color:#ffffff;padding:40px;display:inline-block;vertical-align:middle;position:relative;z-index:5;max-width:65%;}
.prompt-area > .wrapper h1.title{color:#003366;font-weight:normal;font-size:24px!important;border-left:4px #0072bc solid;padding:0px;margin:0px;margin-bottom:30px;padding-left:20px;font-family:'Conv_SukhumvitSet-Light', Tahoma, sans-serif;}
.prompt-area > .wrapper h1.title > small{display:block;color:#666666;font-size:14px!important;font-family:'Conv_SukhumvitSet-Light', Tahoma, sans-serif;}
.prompt-area.show{display:block;}
.prompt-area .btn-close{position:absolute;top:0px;right:0px;display:block;z-index:5;background:#0072bc;color:#fff;padding:2px 8px;}
.frm-area{margin:0px auto;}
.frm-area > .r{margin-bottom:8px;overflow:auto}
.frm-area > .r > .col{box-sizing:border-box;padding:0px;width:100%;}
.frm-area > .r > .col-2{width:50%;float:left;box-sizing:border-box;padding:0px;}
.frm-area > .r > .col-2:first-of-type{padding-right:8px;}
.frm-area .txt-input{outline:none;border:none;padding:14px 20px;width:100%;background-color:#efefef;color:#041e42;font-size:14px;box-sizing:border-box;margin:0px;vertical-align:middle;border-radius:30px;}
.frm-area .txt-label{padding:14px 13px;}
.frm-area select{border:none;background-color:#ffffff;font-size:14px;width:100%;color:#454545;padding:0px}
.frm-area select option{color:#454545;padding:0px}
.frm-area .btn-area{text-align:right;margin-top:8px;}
.frm-area .btn-area .btn{text-align:center;background-color:#041e42;display:inline-block;padding:12px 20px;width:50%;box-sizing:border-box;color:#ffffff;font-size:14px;border:none;border-radius:30px;font-family:'Conv_SukhumvitSet-Light', Tahoma, sans-serif;}
#web_footer_quick_nav{position:fixed;bottom:-480px;width:100%;left:0px;border-top:10px #1f5cb5 solid;z-index:2;background-color:#333;}
#web_footer_quick_nav > .inner{height:418px;width:100%;max-width:1280px;margin:0px auto;padding-top:14px;overflow:auto;}
#web_footer_quick_nav > .inner > .title{position:absolute;top:-25px;right:18%;}
#web_footer_quick_nav table.datalist{border:0px;margin-top:30px;}
#web_footer_quick_nav table.datalist th , #web_footer_quick_nav table.datalist td{border-right:1px #515151 solid;border-bottom:1px #515151 solid;}
#web_footer_quick_nav table.datalist .no-border-right{border-right:0px}
#web_footer_quick_nav table.datalist .no-border-bottom{border-bottom:0px}
#web_footer_quick_nav table.datalist th{background-color:#3b3c3d;font-weight:normal;text-align:left;}
#web_footer_quick_nav table.datalist td a , #web_footer_quick_nav table.datalist th a{color:#cccccc;text-decoration:none;padding:6px 15px;display:block;font-family:'Conv_SukhumvitSet-Light', Tahoma, sans-serif;font-size:14px;}
.mobi_hide{display:block}
.mobi_show{display:none}
@media (min-width:240px) and (max-width:478px){.btn-sitemap{display:none;}
.item-container1{
    margin-left: 160px;
    top: -10px;
    display: flex;
    justify-content: space-around;
}

}
@media (min-width:478px) and (max-width:767px){#web_footer_quick_nav > .inner > .title{position:absolute;top:-25px;right:5%;}
.item-container1{
    margin-left: 300px;
    top: 0px;
    display: flex;
    justify-content: space-around;
}

}

@media (min-width:768px) and (max-width:992px){#web_footer_quick_nav > .inner > .title{position:absolute;top:-25px;right:5%;}
.item-container1{
    margin-left: 555px;
    top: -18px;
    display: flex;
    justify-content: space-around;
}

}
@media (min-width:992px) and (max-width:1200px){#web_footer_quick_nav > .inner > .title{position:absolute;top:-25px;right:5%;}
.item-container1{
    margin-left: 787px;
    top: -18px;
    display: flex;
    justify-content: space-around;
}
}
@media (min-width:1200px) and (max-width:1366px){
    .item-container1{
        margin-left: 760px;
        top: -33px;
        display: flex;
    justify-content: space-around;
    }
}
@media (min-width:1367px){}
@media all and (max-width:1366px){}