takitak

<header class="header">

    <div class="form header__form">float:right</div>
    <div class="logo header__logo ">float:left</div>
    <div class="search header__search">float:left</div>
</header>

.header__form
  float:right;

.header__logo
  float:left;

.header__search
  float:left;