src/platform/site-wide/header/components/Search/styles.scss
.header-search {
input {
max-width: unset;
}
}
.search-input-container {
max-width: unset !important;
}
.search-input {
max-width: unset !important;
}
.search-button {
border-top-left-radius: 0;
border-bottom-left-radius: 0;
height: 42px;
width: 45px;
}