css效果

1、放大效果

a:hover img{
    -webkit-transform:scale(1.5,1.5);
    -moz-transform:scale(1.5,1.5);
    -transform:scale(1.5,1.5);
}
<a href="#"><img src="" /></a>

 2、呼吸灯发光

@-webkit-keyframes  shineRed {
from { -webkit-box-shadow: 0 0 5px #bbb; }
50% { -webkit-box-shadow: 0 0 10px red; }
to { -webkit-box-shadow: 0 0 5px #bbb; }
}
a:hover img{
    -webkit-animation-name: shineRed; 
    -webkit-animation-duration: 3s;
    -webkit-animation-iteration-count: infinite;
}

<a href="#"><img src="" /></a>

 3、滚动条

::-webkit-scrollbar {    
  width: 30px;    
  height: 30px;    
}    
    
::-webkit-scrollbar-track,    
::-webkit-scrollbar-thumb {    
  border-radius: 999px;    
  border: 10px solid transparent;    
    
}    
    
::-webkit-scrollbar-track {    
  box-shadow: 1px 1px 5px transparent inset;
  background: #2e3643;    
  -webkit-border-radius: 0px;/*圆角弧度*/ 
  border: 10px solid #081831;
  border-top-width: 0px;
  border-bottom-width: 0px;
}    
    
::-webkit-scrollbar-thumb {    
  min-height: 20px;    
  background-clip: content-box;    
  box-shadow: 0 0 0 10px #1c76b9 inset;    
  -webkit-border-radius: 0px;/*圆角弧度*/  
}    

::-webkit-scrollbar-corner {    
  background: transparent;    
}