themes-wordpress/spearhead/assets/sass/_search.scss

// Import screen reader classes from Seedlet.
@import "../../../seedlet/assets/sass/base/accessibility";

.search-results {
    .site-main > * {
        padding: var(--global--spacing-vertical) 0;
    }

    .search-form {
        padding-bottom: 0;
        margin-bottom: var(--global--spacing-vertical);
    }

    .entry-title {
        font-size: var(--heading--font-size-h2);
    }

    .entry-header {
        margin-bottom: 0;
    }
}

.search-form {
    border-bottom: var(--form--border-width) solid var(--form--border-color);
    flex-direction: row-reverse;

    & > label {
        margin-right: 0;
        padding-left: 30px;
        position: relative;
        &:before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' id='search-icon' class='search-icon' viewBox='0 0 24 24' width='24' height='24'%3E%3Cpath d='M13.5 6C10.5 6 8 8.5 8 11.5c0 1.1.3 2.1.9 3l-3.4 3 1 1.1 3.4-2.9c1 .9 2.2 1.4 3.6 1.4 3 0 5.5-2.5 5.5-5.5C19 8.5 16.5 6 13.5 6zm0 9.5c-2.2 0-4-1.8-4-4s1.8-4 4-4 4 1.8 4 4-1.8 4-4 4z'%3E%3C/path%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: center center;
            width: 24px;
            height: 100%;
        }
    }
    input[type="search"] {
        border: none;
        padding-top: var(--button--padding-vertical);
        padding-bottom: var(--button--padding-vertical);
        font-size: var(--global--font-size-sm);
        color: var(--entry-header--color);
    }
    input[type="submit"] {
        background: none;
        color: var(--entry-header--color);
        @extend .screen-reader-text;
    }
}