diff --git a/business.html b/business.html
index 917a01e..3dab916 100644
--- a/business.html
+++ b/business.html
@@ -111,13 +111,13 @@
 							<div class="preview-swiper swiper">
 								<div class="swiper-wrapper">
 									<div class="swiper-slide">
-										<img src="imgs/business-swiper.jpg" alt="">
+										<span><img src="imgs/business-swiper.jpg" alt=""></span>
 									</div>
 									<div class="swiper-slide">
-										<img src="imgs/news-01.png" alt="">
+										<span><img src="imgs/news-01.png" alt=""></span>
 									</div>
 									<div class="swiper-slide">
-										<img src="imgs/business-swiper.jpg" alt="">
+										<span><img src="imgs/business-swiper.jpg" alt=""></span>
 									</div>
 								</div>
 							</div>
diff --git a/css/style.css b/css/style.css
index e4f500c..fa9f968 100644
--- a/css/style.css
+++ b/css/style.css
@@ -19,10 +19,6 @@
 	font-family:"AlibabaSans-Light";
 	src: url(../fonts/AlibabaSans-Light.otf);
 }
-.swiper-button-prev,
-.swiper-button-next:focus {
-	outline: none;
-}
 /* 头部 */
 .header{
 	height: 90px;
@@ -1256,6 +1252,13 @@
 	margin-bottom: 20px;
 	background-color: #FFFFFF;
 }
+.preview .swiper-slide-thumb-active>span{
+	display: block;
+	width: calc(100% - 8px);
+	height: calc(100% - 8px);
+	overflow: hidden;
+	margin: 4px auto;
+}
 .preview .swiper-slide img{
 	width: 100%;
 	min-height: 178px;
@@ -1264,7 +1267,6 @@
 
 .preview .swiper-slide-thumb-active{
 	border: 1px solid #eda4a9;
-	padding: 4px;
 }
 
 .preview .swiper-slide-thumb-active img{
@@ -1272,6 +1274,7 @@
 	min-height: 168px;
 	cursor: pointer;
 }
+
 .preview-arrow{
 	display: flex;
 	width: 116px;
@@ -1314,6 +1317,10 @@
 	border-left: 0;
 	cursor: pointer;
 }
+.preview-arrow-prev,
+.preview-arrow-next:focus {
+	outline: none;
+}
 .preview-arrow .preview-arrow-prev:hover{
 	background-color: #de0011;
 	background-image: url(../imgs/arrow-left2.png);
@@ -1929,8 +1936,29 @@ textarea::-webkit-input-placeholder {
 	.pull-banner-title p{
 		font-size: 28px;
 	}
+	.preview .swiper-slide{
+		height: 150px;
+		overflow: hidden;
+	}
+	.preview .swiper-slide img{
+		min-height: 150px;
+	}
+	.preview .swiper-slide-thumb-active img{
+		min-height: 140px;
+	}
+}
+@media screen and (max-width:1340px){
+	.preview .swiper-slide{
+		height: 146px;
+		overflow: hidden;
+	}
+	.preview .swiper-slide img{
+		min-height: 146px;
+	}
+	.preview .swiper-slide-thumb-active img{
+		min-height: 136px;
+	}
 }
-
 @media screen and (max-width:1280px){
 	.logo h1{
 		font-size: 20px;
@@ -1963,18 +1991,28 @@ textarea::-webkit-input-placeholder {
 	.pull-banner-title p{
 		font-size: 28px;
 	}
-}
-@media screen and (max-width:1180px){
 	.preview .swiper-slide{
-		height: 134px;
-		margin-bottom: 10px;
+		height: 130px;
+		overflow: hidden;
 	}
 	.preview .swiper-slide img{
-		min-height: 134px;
+		min-height: 130px;
 	}
 	.preview .swiper-slide-thumb-active img{
 		min-height: 120px;
 	}
+}
+@media screen and (max-width:1180px){
+	.preview .swiper-slide{
+		height: 124px;
+		margin-bottom: 10px;
+	}
+	.preview .swiper-slide img{
+		min-height: 124px;
+	}
+	.preview .swiper-slide-thumb-active img{
+		min-height: 114px;
+	}
 	.enterprise-txt{
 		height: 280px;
 		padding-top: 45px;
@@ -2014,6 +2052,16 @@ textarea::-webkit-input-placeholder {
 	}
 }
 @media screen and (max-width:1080px){
+	.preview .swiper-slide{
+		height: 115px;
+		margin-bottom: 10px;
+	}
+	.preview .swiper-slide img{
+		min-height: 115px;
+	}
+	.preview .swiper-slide-thumb-active img{
+		min-height: 105px;
+	}
 	.nav li>a, .nav li.active>a{
 		padding: 0 12px;
 		font-size: 15px;