zulip/web/styles/search.css

#searchbox,
#searchbox_legacy {
    width: 100%;
    height: var(--header-height);

    .navbar-search:not(.expanded) {
        display: none;
    }

    .navbar-search.expanded {
        float: left;
        overflow: hidden;
        margin-top: 0;
        margin-bottom: 0;
        width: calc(100% - 2px);
        position: absolute;

        .search_button {
            display: inline;
            margin-right: 15px;
        }
    }

    .input-append {
        position: relative;
        width: 100%;
        width: max-content;
        min-width: 100%;

        .fa-search {
            padding: 0;
            font-size: 20px;
            position: absolute;
            left: 10px;
            top: 10px;
            z-index: 5;
        }

        .fa-search:not(.deactivated) {
            cursor: pointer;
        }
    }

    #search_query {
        width: 100%;
        font-size: 16px;
        height: var(--header-height);
        padding: 0;
        padding-left: 5px;
        padding-right: 40px;
        border: none;
        border-radius: 0;
        font-family: "Source Sans 3", sans-serif;
        font-weight: 300;
        line-height: var(--header-height);
        text-overflow: ellipsis;
        overflow: hidden;
        white-space: nowrap;
    }

    #search_arrows:focus {
        box-shadow: inset 0 0 0 2px hsl(204, 20%, 74%);
    }

    .search_button,
    .search_button:disabled:hover {
        position: absolute;
        right: 35px;
        top: 6px;
        background: none;
        border-radius: 0;
        border: none;
        height: 30px;
        text-align: center;
        padding: 4px;
        color: inherit;
        opacity: 0.5;
        font-size: 18px;
        box-shadow: none;
        text-shadow: none;
        z-index: 5;
    }

    .search_button:hover {
        opacity: 1;
    }

    .search_button:disabled {
        visibility: hidden;
    }

    .search_icon {
        position: absolute;
        height: 100%;
        text-decoration: none;
        padding: 0 10px;
        font-size: 20px;
        z-index: 5;
        left: 0;
    }

    #search_arrows {
        padding-left: 35px;
        font-size: 90%;
        letter-spacing: normal;
    }

    .pill-container {
        display: flex;
        flex-wrap: nowrap;
        align-items: center;
        border: none;
        padding: 0;
    }

    @media (width >= $sm_min) {
        .pill {
            padding: 2px 0 !important;
            font-size: 14px;
        }
    }
    @media (width < $sm_min) {
        #search_arrows .pill {
            line-height: 20px;

            .exit {
                top: 0;
            }
        }
    }
}

#searchbox_legacy {
    #search_arrows {
        padding-left: 0;
    }

    #search_query {
        padding-left: 35px;
    }

    .search_button {
        right: 0;
    }

    .navbar-search.expanded {
        .search_button {
            margin-right: 14px;
        }
    }
}

@media (width < $sm_min) {
    #searchbox,
    #searchbox_legacy {
        .input-append .fa-search {
            top: 5px;
        }

        .search_button,
        .search_button:disabled:hover {
            top: 0;
        }
    }

}