div.body{
    width: 100%;
    height: 100%;
    background: url(../image/bg.png); 
    display: flex; 
}
div.enter{
    align-self: center;
    margin: 0 auto;
}
div.enter h4{
    font-size: 28px;
    text-align: center;
   
}
div.enter div.search{
width: 500px;
height: 50px;
border:1px solid #1890ff;
margin-top: 50px;
}
div.search input{
    padding: 0px 15px; 
    float: left; 
    height: 50px;
    width: 300px;
    line-height: 40px;
    outline: none;
    border: none;
}
div.enter div.search-right{
    float: right;
    width: 140px;
    height: 50px;
    background: #1890ff;
}
div.enter div.search div.search-right a{
    width: 100%;
    height: 100%;
    display:block ;
    color: #fff;
    line-height: 50px;
    text-align: center;
}