the Maliciously ads in website

hi,my site heelsbags.targetmarts.com maybe have Maliciously ads.
i can see Maliciously ads display a few times when i clear coockies and open my site,and i can see the ads style is in stylesheet_flex.css help me to check.

.content-slider {/*box-shadow: 0 5px 7px -5px #333;*/width:65%;float:right;margin-right:15px;}
/* Browser Resets */
.flex-container a:active, .flexslider a:active, .flex-container a:focus, .flexslider a:focus  {outline: none;}
.slides, .flex-control-nav, .flex-direction-nav {margin: 0; padding: 0; list-style: none;}
/* FlexSlider Necessary Styles
*********************************/ 
.flexslider {margin: 0;}
.flexslider .slides > li {display: none;-webkit-backface-visibility: hidden;} /* Hide the slides before the JS is loaded. Avoids image jumping */
.flexslider .slides > li:first-child {display: block;} /* show the first slide only */
.flexslider .slides img {width: 100%;height: auto !important;max-height:100%;display: block;min-height: /*400px*/auto;}
.flex-pauseplay span {text-transform: capitalize;}
/* Clearfix for the .slides element */
.slides:after {content: "."; display: block; clear: both; visibility: hidden; line-height: 0; height: 0;}
html[xmlns] .slides {display: block;}
* html .slides {height: 1%;}
/* No JavaScript Fallback */
/* If you are not using another script, such as Modernizr, make sure you
 * include js that eliminates this class on page load */
.no-js .slides > li:first-child {display: block;}
/* FlexSlider Default Theme
*********************************/
.flexslider {margin: 0; background: #fff; position: relative; zoom: 1; z-index: 999;}
.flex-viewport {max-height: 2000px; -webkit-transition: all 1s ease; -moz-transition: all 1s ease; transition: all 1s ease;}
.loading .flex-viewport {max-height: 300px;}
.flexslider .slides {zoom: 1;}
.carousel li {margin-right: 5px}
/* Direction Nav */
.flex-direction-nav {height: 0;}
.flex-direction-nav a {width: 30px; height: 30px; margin: -20px 0 0; display: block; position: absolute; top: 50%; z-index: 1000; cursor: pointer; text-indent: -9999px;}
.flex-direction-nav .flex-next {background: url(../images/right-arrow.png) no-repeat; right: -49px; z-index: 100;}
.flex-direction-nav .flex-prev {background: url(../images/left-arrow.png) no-repeat; left: -49px; z-index: 100;}
.flex-direction-nav .flex-disabled {display: none;}
/* Pause/Play */
.flex-pauseplay a { display: block; width: 20px; height: 20px; position: absolute; bottom: 5px; left: 10px; opacity: 0.8; z-index: 10; overflow: hidden; cursor: pointer; color: #000; }
.flex-pauseplay a:before  { font-family: "flexslider-icon"; font-size: 20px; display: inline-block; content: '\f004'; }
.flex-pauseplay a:hover  { opacity: 1; }
.flex-pauseplay a.flex-play:before { content: '\f003'; }
/* Control Nav */
.flex-control-nav {background: none;position: absolute;bottom: 12px;right: 7px;text-align: center;padding: 15px 10px;max-width: 978px;width: auto;z-index: 2;}
.flex-control-nav li {margin: 0 6px;float: left;zoom: 1;display: inline;}
.flex-control-paging li a {width: 12px;height: 12px;border-radius: 6px;display: block;background: transparent;background:#ccc;cursor: pointer;text-indent: -9999px;}
.flex-control-paging li a:hover, .flex-control-paging li a.flex-active {background: #171717;}
.flex-control-paging li a.flex-active {cursor: default;}
.flex-control-thumbs {margin: 5px 0 0; position: static; overflow: hidden;}
.flex-control-thumbs li {width: 25%; float: left; margin: 0;}
.flex-control-thumbs img {width: 100%; display: block; opacity: .7; cursor: pointer;}
.flex-control-thumbs img:hover {opacity: 1;}
.flex-control-thumbs .flex-active {opacity: 1; cursor: default;}
.banner {left: 50%;margin-left: -392px;	position: absolute;height: 100%;max-width: 1000px;width: 100%;top: 0;z-index: 1;}
.banner span {background-color: rgba(46, 50, 51, 0.8);color: #fff;	bottom: 12px;height: auto;line-height: normal;text-indent: 18px;position: absolute;font-size:200%;width: 100%;padding: 15px 0;text-transform: uppercase;}
.flexslider .slides li {position:relative;}
.flex-caption {position:absolute;left:0;right:0;bottom:0;background:#000;z-index:1;padding:5px;}

@media screen and (max-width: 1920px) {   /*for large desktop screens eg 1920 x 1080*/
.banner {left: 0;right: 15px;margin-left: 0;}
.banner p {font-size: 22px;text-indent: 15px}
.flexslider .slides img {min-height: 0;}
}

@media screen and (max-width: 1038px) {
.banner {left: 0;right: 15px;margin-left: 0;}
.banner p {font-size: 22px;text-indent: 15px}
.flexslider .slides img {min-height: 0;}
}

@media screen and (max-width: 786px) {
.flex-direction-nav, .flex-control-nav {display: none !important;}
}
@media screen and (max-width: 480px) {
.banner p {bottom: 8px;	font-size: 16px;}
.flexslider .slides img {min-height: 130px;}

Perhaps could give more information as on the bare surface there doesn't seem to be anything wrong with the provided css...

The issue could be local to your computer, it could be something with your website.

Also I can not find anything strange in the source code on your homepage.

it show the ads from http:// dsp.189zj.cn:8889/out/6114.html

I don't see anything either, but this (from your footer) should be fixed:

 <a class="handle" href="http://link-for-non-js-users.html"><h2>Sale for May-2018</h2></a>

(I would just remove that stuff. Who runs without JS anymore?)