.form-search .form-keyword input {
    display: initial;
}
@media only screen and (min-width: 641px) {
    .form-search .form-keyword input {
        width: 50%;
    }
}
@media only screen and (max-width: 641px) {
    .form-search .form-keyword input {
        width: calc(100% - 54px);
    }
}