.subscribe-cs form {
    display: flex;
    justify-content: center;
    height: 44px;
}

.subscribe-cs form input[type="email"] {
    border: 1px solid var(--bs-link-color);
    border-right-width: 0;
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}
.subscribe-cs form input[type="email"]:focus {
    box-shadow: unset
}
.subscribe-cs form button {
    border: 1px solid var(--bs-link-color);
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
    background-color:var(--bs-link-color);
}
.subscribe-cs form button:hover {
    border: 1px solid var(--bs-link-color);
    background-color:var(--bs-link-color);
}