.header{  
    position: relative;
    height: 290px;
    background: url(header_bg.png);
    background-size: 100% 100%;
    background-repeat: no-repeat;
}

.header_item {
    width: 100%;
    height: 40px;
    font-size: 18px;
    font-weight: bold;
    color: #F6FAFF;
    text-shadow: 0px 1px 8px rgba(14, 19, 31, 0.29);
    line-height: 40px;
    margin: 0 auto;
}

.header_item  a {
    color: #F6FAFF;
}

.header_item_left {
    display: flex;
    float: left;  
    width: 30%;
    justify-content: flex-end;
}

.header_item_right {
    display: flex; 
    float: right;
    width: 40%;
}

.header_item_right li {
   margin: 0 0 0 30px;
}

.header__center {
    padding-top: 61px;
    width: 50%;
    height: 250;
    text-align: right;
}

.header__center > img {
    display: inline-block;
    margin-bottom: 10px;
}



.header__center  input {
    vertical-align: bottom;
    display: inline-block;
    width: 225px;
    height: 40px;
    border: 1px solid #235DDB;
    text-indent: 20px;
    border-top-left-radius: 10px;
    border-bottom-left-radius: 10px; 
    outline: none;
    box-sizing: border-box;
    background: white;
}

.header__center button {
    float: right;
    display: inline-block;
    width: 75px;
    height: 40px;
    padding: 0px;
    border-top-right-radius: 10px;
    border-bottom-right-radius: 10px; 
    border: 1px solid #235DDB;
    background-color: #235DDB;
    cursor: pointer
}