图片的方法与缩小 纯css

.section1_left_content_left .bd ul li a img{
    transition: transform 1s;
    -webkit-transition: transform 1s;
    -ms-transition:transform 1s;
    -moz-transition:transform 1s;
    -o-transition:transform 1s;
}
.section1_left_content_left .bd ul li a img:hover {
    transform: scale(1.1);
    transition: transform 1s;
    -webkit-transform: scale(1.1);
    -webkit-transition: transform 1s;
}