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HTML

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CSS

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JavaScript

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HTML 

              
                <div class="container">
  <div class="sw">
    <form>
      <input type="search" class="search" placeholder="Search..." />
      <button class="go">
        <svg enable-background="new 0 0 512 512" version="1.1" viewBox="0 0 512 512" xml:space="preserve" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><path d="M497.913,497.913c-18.782,18.782-49.225,18.782-68.008,0l-84.862-84.863c-34.889,22.382-76.13,35.717-120.659,35.717  C100.469,448.767,0,348.312,0,224.383S100.469,0,224.384,0c123.931,0,224.384,100.452,224.384,224.383  c0,44.514-13.352,85.771-35.718,120.676l84.863,84.863C516.695,448.704,516.695,479.131,497.913,497.913z M224.384,64.109  c-88.511,0-160.274,71.747-160.274,160.273c0,88.526,71.764,160.274,160.274,160.274c88.525,0,160.273-71.748,160.273-160.274  C384.657,135.856,312.909,64.109,224.384,64.109z"/></svg>
      </button>
      <a href="#" class="logo" title="Tuulkit">
        <svg x="0px" y="0px" viewBox="0 0 322 61.797" enable-background="new 0 0 322 61.797" xml:space="preserve">
          <path fill="#FFFFFF" d="M31,15.312v46H18v-46H0v-13h49v13H31z"></path>
          <path fill="#FFFFFF" d="M73,39.228c0,6.916-4.203,10.214-8.99,10.214c-4.704,0-9.01-3.38-9.01-10.214H41 C41,51.944,51.271,61.02,63.51,61.02C75.812,61.02,86,51.944,86,39.228H73z"></path>
          <path fill="#FFFFFF" d="M121,39.228c0,6.916-4.703,10.214-9.49,10.214c-4.704,0-9.51-3.38-9.51-10.214H89 c0,12.715,9.771,21.792,22.01,21.792c12.302,0,21.99-9.076,21.99-21.792H121z"></path>
          <path fill="#FFFFFF" d="M142,61.312v-60h12v60H142z"></path>
          <path fill="#FFFFFF" d="M186.643,37.546l16.375,23.767h-15.382l-9.63-14.602L174,50.965v10.348h-13v-60h13v32.45l12.395-13.45 h16.293L186.643,37.546z"></path>
          <path fill="#FFFFFF" d="M215.173,0.02c4.135,0,7.443,3.308,7.443,7.361c0,4.053-3.308,7.361-7.443,7.361 c-3.969,0-7.278-3.308-7.278-7.361C207.895,3.328,211.203,0.02,215.173,0.02z M209,61.312v-41h13v41H209z"></path>
          <path fill="#FFFFFF" d="M247,20.312h8v11h-8v15.021c0,3.391,1.391,4.301,4.12,4.301c1.324,0,2.88-0.248,2.88-0.414v10.421 c0,0.248-2.432,1.158-6.403,1.158c-8.518,0-13.597-5.045-13.597-13.232V31.312h-7v-11h1.942c4.301,0,6.058-3.256,6.058-7.06v-4.94 h12V20.312z"></path>
          <path fill="#7C67D4" d="M267.407,49.69c3.063,0,5.633,2.516,5.633,5.578c0,3.008-2.57,5.633-5.633,5.633 c-3.063,0-5.579-2.625-5.579-5.633C261.828,52.206,264.344,49.69,267.407,49.69z"></path>
          <path fill="#7C67D4" d="M282.128,21.047c2.734,0,4.922,2.188,4.922,4.867c0,2.68-2.188,4.868-4.922,4.868 c-2.625,0-4.813-2.188-4.813-4.868C277.315,23.235,279.503,21.047,282.128,21.047z M278,61.312v-27h8v27H278z"></path>
          <path fill="#7C67D4" d="M320.52,46.791c0,8.422-6.289,14.438-14.438,14.438c-8.094,0-14.438-6.016-14.438-14.438 s6.344-14.384,14.438-14.384C314.231,32.408,320.52,38.369,320.52,46.791z M312.207,46.791c0-4.594-2.953-6.727-6.125-6.727 c-3.117,0-6.126,2.133-6.126,6.727c0,4.539,3.008,6.782,6.126,6.782C309.254,53.573,312.207,51.385,312.207,46.791z"></path>
        </svg>
      </a>
    </form>
  </div>
  <div class="content">
    <h1>Material Search</h1>
    <cite>Flexbox, Responsive &amp; No Javascript</cite>
  </div>
</div>
!

CSS 

              
                @import url(https://fonts.googleapis.com/css?family=Roboto:400,500,700);

$blue: #533687 ;

*, div { box-sizing: border-box;}

html, body {
  width: 100%;
  height: 100%;
  background: #e8eaf6;
  -webkit-font-smoothing: antialiased;
}

.container {
  display: block;
  width: 70%;
  margin: 20px auto 0 auto;
  height: auto;
}

.sw {
  float: left;
  width: 100%;
  height: 80px;
  background: $blue;
  padding: 15px;
  display: flex;
  align-items: center;
  box-shadow: 0 2px 0 0px rgba(#000,.1);

  
  form {
    float: left;
    width: 100%;
    height: 50px;
    display: flex;
    align-items: center;
  }
  
  a.logo {
    display: flex;
    flex: 1 1 auto;
    order: 0;
    width: 100%;
    height: 100%;
    max-width: 80px;
    margin-right: 10px;
    transition: all 0.05s ease-in-out;
    visibility: visible;
    opacity: 1;
    svg {
      max-width: 100%;
      width: 100%;
      margin-top: auto;
      margin-bottom: auto;
    }
  }
  
  .search {
    flex: 1 1 auto;
    order: 2;
    outline: none;
    border: none;
    border-radius: 0;
    background: #fff;
    padding: 10px;
    font-family: 'Roboto', sans-serif;
    height: 50px;
    transition: all 0.05s ease-in-out;
    -webkit-appearance: none;
    &:focus {
      height: 80px;
      margin-left: -15px;
      padding: 10px 15px;
      + .go {
        height: 80px;
        margin-right: -15px;
        max-width: 80px; // Prevent icon from moving
        color: $blue;
        svg {
          fill: black;
        }
        + a.logo {
          visibility: hidden;
          opacity: 0;
          max-width: 0px;
          margin-right: 0;
        }
      }
    }
  }
  
  .go {
    flex: 1 1 auto;
    order: 3;
    max-width: 50px;
    display: inline-block;
    border: none;
    background: #fff;
    color: #ccc;
    height: 50px;
    transition: all 0.05s ease-in-out;
    font-size: 21px;
    outline: none;
    svg {
      width: 16px;
      fill: #ccc;
    }
  }
}

// Demo Only
.content {
  float: left;
  width: 100%;
  clear: both;
  padding: 15px;
  text-align: center;
  h1 {
    font-family: 'Roboto', sans-serif;
    color: #333;
    padding: 0;
    font-size: 48px;
    font-weight: 500;
    -webkit-font-smoothing: antialiased;
    letter-spacing: -0.02em;
    margin-top: 50px 0 0 0;
  }
  p {
    font-family: "Roboto", sans-serif;
    font-size: 16px;
    color: #333;
    -webkit-font-smoothing: antialiased;
    a {
      color: $blue;
      text-decoration: none;
      &:hover {
        text-decoration: underline;
      }
    }
  }
  cite {
    color: #aaa;
  }
}
!

JS
!
999px

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