/**组件**/
.ser .a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: .5s;
    position: relative;
    height: 30px;
    width: 160px;
    padding: 0 10px;
    border-radius: 15px;
    background: #0a4586;
    
    border: 1px solid #fff;
    float: right;}

.ser .a .input {
        width: calc(100% - 18px);
    height: 100%;
    padding: 0 15px 0 0;
    font-size: 16px;
    color: #fff;
    line-height: 30px;
    background: #0a4586;}

.ser .a .serbtn {
    width: 18px;
    background: url(images/ser.png) no-repeat left center;
    background-size: 18px;
    height: 100%
;}

.ser .a .input::-webkit-input-placeholder {
    color: #fff
;}

.ser .a .input::-moz-placeholder {
    color: #fff
;}

.ser .a .input:-moz-placeholder {
    color: #fff
;}

.ser .a .input:-ms-input-placeholder {
    color: #fff
;}