.handle-input-search{ /*用id避免自帶樣式的影響*/
    display: inline-block;
    width: 150px;
    height: 28px;
    float: left;
    margin-left: 8px;
    border-radius: 4px;
    padding-left: 10px;
    border: 1px solid #bfcbd9;
    box-sizing: border-box;
    color: #1f2d3d;
    font-family: inherit;
    font-size
 
: 8px;
    outline: 0;
    /*-webkit-transition: border-color .2s cubic-bezier(.645,.045,.355,1);*/
    -webkit-transition:.2s border-color;
    -webkit-appearance: none;
  }
  .handle-input-search:focus{
    border-color:#20a0ff;
  }

• 效果