一像素边框

.slide { position:relative;}.slide :before{ position:absolute; content:""; width:100%; height:1px; border:1px solid #EEEEEE; transform:scaleY(0.5);}

2.下面的一像素边框

.slide { position:relative;}.slide :after{display:block; position:absolute;  left:0; bottom:0;content:""; width:100%; border-top:1px solid #EEEEEE; transform:scaleY(0.5);}