#search-form {
    display: flex;
    width: 140px;
    height: 26px;
}

#btn-search-site {
    margin: 0 0 0 4px;
    padding: 2px;
    box-sizing: content-box;
}

#txt-search-site {
    width: 93px;
    height: 20px;
    padding: 2px;
    box-sizing: content-box;
    background-color: white;
    color: #333;
}