/// header.php-be:

<div class="search-form">
<form role="search" method="get" id="mysearchform" action="<?php echo esc_url( home_url( '/' ) ); ?>">
<input type="text" value="<?php echo get_search_query(); ?>" name="s" id="s" placeholder="Keres" />
<input type="submit" id="searchsubmit" value="Keres" />
</form>
</div>
<!-- .search-form -->

/// CSS-be:

/* search menu */
    .search-form {
			float: right;
padding-right: 0%;
}
    form#mysearchform {
            margin-top: -9px;
            margin-right: -30px;}   
    input#s {
            border: 0px;
            padding: 8px;
            margin-right: -3px;
			    margin-left: 10px;
}
    input#searchsubmit {
            border: 0;
            padding: 8px 8px;
        color:#fff;}
/* colors */
    /* changes the social icon background colors */ #et-secondary-menu {background: #ed6a5e;}
    /* changes the social icon angled edge color */ #et-secondary-menu:after {border-left: 32px solid #008aa5;}
    /* changes the search form input background color */ input#s {background-color: #fff;}
    /* changes the search form button and font colors */ input#searchsubmit {background-color: #74BFE9; color:#fff;}
    /* changes the search form button color on hover */ input#searchsubmit:hover {background-color: #2C4751;}