.masthead {
  height: 70px;
  background-image: url('../assets/img/header.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.bg {
  /* The image used */
  background-image: url("../assets/img/harga.png");
  /* Center and scale the image nicely */
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}
.iframepost {
  position: relative;
  padding-bottom: 10.25%;
  overflow: hidden;
}
.iframepost iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border:0;
}
.videowrapper { float: none; clear: both; width: 100%; position: relative; padding-bottom: 56.25%; padding-top: 25px; height: 0; } .videowrapper iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }

.container2 {
  position: relative;
  width: 100%;
  overflow: hidden;
  min-height: 0px;
  padding-top: 57.25%; /* 16:9 Aspect Ratio */
}
.responsive-iframe {
  position: absolute;
  top: 0px;
  left:  0px;
  #right: -10px;
  #padding-right: 46.25%;
  #padding-left: 56.25%;
  width: 100%;
  height: 105%;
  border: none;
}

.ic {
float: left; margin: 0px 4px 4px 0px; height: 24px; width: 58px;
}
.bg-white {
    background-color: #495057 !important;
}

.container4 {

    width: 100%;
    padding-right: 1px;
    padding-left: 1px;
    margin-right: auto;
    margin-left: auto;
}
/* ============IMG========= */
img {
  max-width: 90%;
  width: 40;
  height: 300x;
  object-fit: cover;
  object-position: center;
    border: 0px solid red;
}
.center {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 90%;
}
/* ============IMG========= */

<style type="text/css">
/*CSS Multi Tab Video by Blog Mas Tamvan*/
#multitab-video{position:relative;box-sizing:border-box;margin:0 auto;line-height:2em;font-size:15px!important;width:100%}
#multitab-video #movie-player{position:relative;padding-bottom:56.25%;padding-top:1.66666666666667em;height:0}
#multitab-video #movie-player iframe{position:absolute;top:0;left:0;width:100%;height:100%}
#multitab-video #server-list{position:relative;background:#495057;display:block}
#multitab-video #server-list .server-item:before{content:attr(title);width:9.99333333333333px;display:inline-block;padding-left:0.933333333333333em}
.server-item{border-bottom:1px solid #c8c8cb}
#multitab-video #server-list a{color:#334;text-decoration:none;border:1px solid #fff;padding: 2px 6px 2px 10px; display:inline-block;margin:0.033333333333333px;box-sizing:border-box}
a:active{background-color:rgb(138, 105, 62)}

/* -- Menu Horizontal + Sub Menu-- */
#cat-nav {background:#444f61;margin:0 12px;padding:0;height:35px;}
#cat-nav a { color:#eee; text-decoration:none; text-shadow: #444f61 0px 1px 0px;border-right:1px solid #156994;}
#cat-nav a:hover { color:#fff; }
#cat-nav li:hover { background:#000; }
#cat-nav a span { font-family:Verdana, Geneva, sans-serif; font-size:11px; font-style:normal; font-weight:400; color:#fff; text-shadow:none;}
#cat-nav .nav-description { display:block; }
#cat-nav a:hover span { color:#fff; }
#secnav, #secnav ul { position:relative; z-index:100; margin:0; padding:0; list-style:none; line-height:1; background:#444f61; }
#secnav a { font-family:Georgia, &quot;Times New Roman&quot;, Times, font-weight:700; font-size:12px; display:block; z-index:100; padding:0 12px; line-height:25px; text-decoration:none;}
#secnav li { float:left; width: auto; height:35px;}
#secnav li ul  { position: absolute; left: -999em; width: 150px; top:34px}
#secnav li ul li  { height:30px; border-top:1px solid #fff; }
#secnav li ul li a  { font-family:Verdana, Geneva, sans-serif; width:180px; line-height:30px; padding:0 10px; font-size:11px; font-style:normal; font-weight:400; color:#eee; }
#secnav li ul ul  { margin: -30px 0 0 180px; }
#secnav li:hover ul ul, #secnav li:hover ul ul ul, #secnav li.sfhover ul ul, #secnav li.sfhover ul ul ul { left:-999em; width: 150px;}
#secnav li:hover ul, #secnav li li:hover ul, #secnav li li li:hover ul, #secnav li.sfhover ul, #secnav li li.sfhover ul, #secnav li li li.sfhover ul { left: auto;width: 150px; }
#secnav li:hover,#secnav li.hover  { position:static; }
#cat-nav #secnav {width:100%;margin:0 auto;}
</style>