.logo-wrapper {position:relative;float:left;margin-right:10px;padding:5px 0;overflow: hidden;}
.logo-wrapper a:before{
content:"";
position: absolute;
left: -665px;
top: -460px;
width: 200px;
height: 15px;
background-color: rgba(255,255,255,.5);
-webkit-transform: rotate(-45deg);
-moz-transform: rotate(-45deg);
-ms-transform: rotate(-45deg);
-o-transform: rotate(-45deg);
transform: rotate(-45deg);/*角度倾斜45*/
-webkit-animation: searchLights 1s ease-in 1s infinite;
-o-animation: searchLights 1s ease-in 1s infinite;
animation: searchLights 1s ease-in 1s infinite;/*光扫过去的时间，自己修改，可以加快*/1s ease-in表示扫过去时间
}
@-webkit-keyframes searchLights {
0% { left: -100px; top: 0; }
to { left: 120px; top: 100px; }
}
@-o-keyframes searchLights {
0% { left: -100px; top: 0; }
to { left: 120px; top: 100px; }
}
@-moz-keyframes searchLights {
0% { left: -100px; top: 0; }
to { left: 120px; top: 100px; }
}
@keyframes searchLights {
0% { left: -100px; top: 0; }
to { left: 120px; top: 100px; }
}
.logo-wrapper 改成你的类名
比如我的就改成
<div class="saoguang">
<a class=logo" href="{CLIENT_URL}/" title="{$meta_title}">
<img src="{SITE_LOGO} " alt="{$meta_title}"/>
</a></div>
.ab-navbar .saoguang {position:relative;float:left;margin-right:10px;padding:0px 0;overflow: hidden;}
.ab-navbar .saoguang a:before{
content:"";
position: absolute;
left: -665px;
top: -460px;
width: 200px;
height: 15px;
background-color: rgba(255,255,255,.5);
-webkit-transform: rotate(-45deg);
-moz-transform: rotate(-45deg);
-ms-transform: rotate(-45deg);
-o-transform: rotate(-45deg);
transform: rotate(-45deg);/*角度倾斜45*/
-webkit-animation: searchLights 1s ease-in 1s infinite;
-o-animation: searchLights 1s ease-in 1s infinite;
animation: searchLights 1s ease-in 1s infinite;/*光扫过去的时间，自己修改，可以加快*/
}
@-webkit-keyframes searchLights {
0% { left: -100px; top: 0; }
to { left: 120px; top: 100px; }
}
@-o-keyframes searchLights {
0% { left: -100px; top: 0; }
to { left: 120px; top: 100px; }
}
@-moz-keyframes searchLights {
0% { left: -100px; top: 0; }
to { left: 120px; top: 100px; }
}
@keyframes searchLights {
0% { left: -100px; top: 0; }
to { left: 120px; top: 100px; }
}
