Input Search

<form class="formit search" method="GET" action="">
    <input type="hidden" name="webship" value="packit.ui" />
    <input type="search" placeholder="Pesquisar no site" name="busca" />
    <button class="btn" type="submit">Procurar</button>
</form>

<form class="formit search" method="GET" action="">
    <input type="hidden" name="webship" value="packit.ui" />
    <input type="search" placeholder="Pesquisar no site" name="busca" />
    <button class="btn" type="submit"><span icon="search"></span></button>
</form>

O botão submit do input=[search] com a lupa requer o icons.js

.search {
    display: flex;
    flex-wrap: wrap;
}
.search input[type=search]:not([type=hidden]) {
    flex: 1 1 0;
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}
.search .btn {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
    box-shadow: none;
}
.search .btn svg.ico {
    position: relative;
    top: 6px;
    margin-top: -5px;
    min-width: 26px;
    filter: drop-shadow(var(--btn__text-shadow));
}
.search .btn:hover {
    box-shadow: none;
}
.search .btn:focus {
    box-shadow: var(--btnFocus__box-shadow);
}

.search .btn.sm svg.ico {
    position: relative;
    top: 5px;
    margin-top: -5px;
    min-width: 20px;
}
.search .btn.lg {
    padding: 7px 15px;
}
.search .btn.lg svg.ico {
    top: 7px;
    margin-top: -6px;
    min-width: 30px;
}